Statistics and Probability

The interquartile range is resistant to the effect of outliers. Indicate whether the statement ...

The interquartile range is resistant to the effect of outliers. Indicate whether the statement ...

The interquartile range is resistant to the effect of outliers.
 
 
  Indicate whether the statement is true or false

Q. 2

When the histogram of a data set is closely approximated by a normal

noyabusiness   31   1 Reply

lkjhg13579

An event is a collection of one or more simple events of an experiment. Indicate whether the ...

An event is a collection of one or more simple events of an experiment. Indicate whether the ...

An event is a collection of one or more simple events of an experiment.
  Indicate whether the statement is true or false

Q. 2

For a chi-square distributed random variable with 10 degrees of freedom and

noyabusiness   64   1 Reply

Jamievig

Recently, a local newspaper reported that part time students are older than full time students. In ...

Recently, a local newspaper reported that part time students are older than full time students. In ...

[html]Recently, a local newspaper reported that part time students are older than full time students. In order to test the validity of its s

npdtan92   45   1 Reply

alexisgardner09

A _________ is any quantity computed from values in a sample.

A _________ is any quantity computed from values in a sample.

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npdtan92   30   1 Reply

mhmoud123

S= {E1, E2, E3, E4, E5, E6}. A = {E1, E4}. What isA?

S= {E1, E2, E3, E4, E5, E6}. A = {E1, E4}. What isA?

[html]

npdtan92   32   1 Reply

rl679

Inferential statistics isbestdefined as:

Inferential statistics isbestdefined as:

[html]

npdtan92   38   1 Reply

anikamazumder

An experiment consists of three tosses of a two-sided coin with the possible outcomes heads (H) or ...

An experiment consists of three tosses of a two-sided coin with the possible outcomes heads (H) or ...

[html]

nrod1120   37   1 Reply

slmseuf1105

Nuclear power plants must discharge the excess heat generated in the nuclear process to the ...

Nuclear power plants must discharge the excess heat generated in the nuclear process to the ...

[html]

nrod1120   44   1 Reply

Ama1911

The descriptive statistics for the age differences (husband age wife age) from a sample of 100 ...

The descriptive statistics for the age differences (husband age wife age) from a sample of 100 ...

[html]

nsdq007   45   1 Reply

josham

The tread life of a particular brand of tire is a random variable best described by a normal ...

The tread life of a particular brand of tire is a random variable best described by a normal ...

The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 1500 miles.
 
  What is the probability a certain tire of this brand will las

Nstilli   27   1 Reply

oberlin1027

The measure of variation that is most affected by outliers is the:

The measure of variation that is most affected by outliers is the:

The measure of variation that is most affected by outliers is the:
 
  A) range. B) interquartile range.
  C) standard deviation. D) variance.

Q. 2

Of A-D, which is not a critical part of desi

Nstilli   42   1 Reply

adavis

An advantage of nonparametric tests is that they require less stringent assumptions than parametric ...

An advantage of nonparametric tests is that they require less stringent assumptions than parametric ...

An advantage of nonparametric tests is that they require less stringent assumptions than parametric tests.
 
  Indicate whether the statement is true or false

Q. 2

For two events C and D, P(C) = 0.

Nstilli   57   2 Replies

Nstilli

The coefficient of determination is the of the linear correlation coefficient.

The coefficient of determination is the of the linear correlation coefficient.

The coefficient of determination is the of the linear correlation coefficient.
 
  A) square B) square root C) opposite D) reciprocal

Q. 2

A drug company wanted to test a new indigestionmedication.

Nstilli   37   1 Reply

biogenik

If A and B are mutually exclusive events and P(A) = 0.6 and P(B) = 0.3, what is P(A or B)? 1.0.9 ...

If A and B are mutually exclusive events and P(A) = 0.6 and P(B) = 0.3, what is P(A or B)? 1.0.9 ...

If A and B are mutually exclusive events and P(A) = 0.6 and P(B) = 0.3, what is P(A or B)?
  1.0.9
  2.0
  3.0.3
  4.0.18

Q. 2

A die is rolled and the following events are defined:

Nstilli   15   1 Reply

roberto

Decide if the sample is representative (or not) of the population for the question of interest. What ...

Decide if the sample is representative (or not) of the population for the question of interest. What ...

Decide if the sample is representative (or not) of the population for the question of interest. What is the average daily number of hours of sleep over a one year period? Sample: Hours of sleep for 100 randomly selected students the night before an e

Nstilli   27   1 Reply

kraks

A poll was taken this year asking college students if they considered themselves overweight. A ...

A poll was taken this year asking college students if they considered themselves overweight. A ...

[html]A poll was taken this year asking college students if they considered themselves overweight.   A similar poll was taken five years ago. Results are summarized

nursecupcake   49   1 Reply

babolat00

Which measure of central tendency cuts the distribution in half when the scores are arranged from ...

Which measure of central tendency cuts the distribution in half when the scores are arranged from ...

Which measure of central tendency cuts the distribution in half when the scores are arranged from high to low?
 
  a. mode
  b. median
  c. mean

Nurselady   67   1 Reply

kylelin

_____ is a norm in which subjects base their voluntary participation in research projects on a full ...

_____ is a norm in which subjects base their voluntary participation in research projects on a full ...

_____ is a norm in which subjects base their voluntary participation in research projects on a full understanding of the possible risks involved.
 
  a. Research participation
 b. The Hawthorne effect
 c. Generalizability
 d

Nurselady   42   1 Reply

bronson

Which of the following statements is FALSE regarding university IRBs?

Which of the following statements is FALSE regarding university IRBs?

Which of the following statements is FALSE regarding university IRBs?
 
  a. IRBs must review all research.
 b. IRBs seek to ensure that the risks faced by subjects are minimal.
 c. IRBs may refuse to approve a study.
 d. IR

Nurselady   31   1 Reply

fuzzycoconut20

IRBs work to ensure that the agency doing the research is protected against lawsuits by human ...

IRBs work to ensure that the agency doing the research is protected against lawsuits by human ...

IRBs work to ensure that the agency doing the research is protected against lawsuits by human subjects.
 
  a. True
 b. False
  Indicate whether the statement is true or false

Nurselady   38   2 Replies

Nurselady

The test-retest method assumes that the phenomena under study does not change.

The test-retest method assumes that the phenomena under study does not change.

The test-retest method assumes that the phenomena under study does not change.
 
  a. True
 b. False
  Indicate whether the statement is true or false

Nurselady   63   1 Reply

loksing1

A summary description of a given variable in a survey sample is called a:

A summary description of a given variable in a survey sample is called a:

A summary description of a given variable in a survey sample is called a:
 
  a. variable.
 b. parameter.
 c. confidence level.
 d. confidence interval.
 e. statistic.

Nurselady   40   1 Reply

miri

According to the Wheel of Science, research projects begin

According to the Wheel of Science, research projects begin

According to the Wheel of Science, research projects begin
 
  a. with theory
  b. with data
  c. with an hypothesis
  d. at any stage on the Wheel

Nurselady   25   1 Reply

Slim1928

You ask a sample of 27 students in a particular dorm on campus about their religious beliefs and use ...

You ask a sample of 27 students in a particular dorm on campus about their religious beliefs and use ...

You ask a sample of 27 students in a particular dorm on campus about their religious beliefs and use this information to make generalizations about all students in the dorm. In this research situation
 
  a. The 27 students questioned are

Nurselady   52   1 Reply

Alonzoperez1118

Michael is spending three months living in a commune doing participant observation in order to fully ...

Michael is spending three months living in a commune doing participant observation in order to fully ...

Michael is spending three months living in a commune doing participant observation in order to fully understand and document the lives of the people who reside there. What is the likely result of Michael's research?
 
  a. Structured inter

Nurselady   293   1 Reply

ginam19pj

By definition, the normal curve is

By definition, the normal curve is

By definition, the normal curve is
 
  a. symmetrical
  b. positively skewed
  c. negatively skewed
  d. empirical

Nurselady   58   2 Replies

Nurselady

Column c in the normal curve table lists areas beyond Z. This is the area

Column c in the normal curve table lists areas beyond Z. This is the area

Column c in the normal curve table lists areas beyond Z. This is the area
 
  a. below a positive Z score
  b. above a negative Z score
  c. between two positive Z scores
  d. above a positive Z score

Nurselady   64   1 Reply

frixion119

What is the probability that a randomly selected case from a normally distributed distribution will ...

What is the probability that a randomly selected case from a normally distributed distribution will ...

What is the probability that a randomly selected case from a normally distributed distribution will have a score between -1.00 and the mean?
 
  a. 0.34
  b. 0.16
  c. 0.50
  d. 0.86

Nurselady   50   1 Reply

chemistry9999

A researcher questioned 45 randomly-selected members of the freshman class about their experiences ...

A researcher questioned 45 randomly-selected members of the freshman class about their experiences ...

A researcher questioned 45 randomly-selected members of the freshman class about their experiences drinking alcohol and used these responses to estimate the drinking behavior of the entire freshman class of 1500 . In this example, the 45 interviewees

Nurselady   53   1 Reply

rachel.rivera@y

The national speed limit in the United States was reduced to 55 mph in 1974 . Proponents and critics ...

The national speed limit in the United States was reduced to 55 mph in 1974 . Proponents and critics ...

The national speed limit in the United States was reduced to 55 mph in 1974 . Proponents and critics of this legislation have looked at the number of traffic fatalities on major U.S. highways (e.g., I-90, I-65, and I-75) for the years preceding and f

Nurselady   39   1 Reply

Fsujohnmans

The efficiency of a sample estimator is essentially a matter of

The efficiency of a sample estimator is essentially a matter of

The efficiency of a sample estimator is essentially a matter of
 
  a. accuracy
  b. validity
  c. centrality
  d. dispersion

Nurselady   20   1 Reply

warm z

Sample size and the width of confidence intervals

Sample size and the width of confidence intervals

Sample size and the width of confidence intervals
 
  a. increase at the same rate
  b. increase at different rates: sample size increases faster than interval width
  c. increase at different rates: sample size increases more sl

Nurselady   46   1 Reply

martinez6496

URL and web address are synonyms.

URL and web address are synonyms.

URL and web address are synonyms.
 
  a. True
 b. False
  Indicate whether the statement is true or false

Nurselady   23   1 Reply

EmilyMM265

A null hypothesis that states the population means are equal would be appropriate for which of the ...

A null hypothesis that states the population means are equal would be appropriate for which of the ...

A null hypothesis that states the population means are equal would be appropriate for which of the following tests of significance?
 
  a. chi square
  b. tests of proportions
  c. ANOVA
  d. Fisher's Exact test

Nurselady   36   2 Replies

Nurselady

If social class is a cause of a person's political ideology, then ___________ is the independent ...

If social class is a cause of a person's political ideology, then ___________ is the independent ...

If social class is a cause of a person's political ideology, then ___________ is the independent variable and ___________ is dependent.
 
  a. class  ideology
  b. ideology  class
  c. person  ideology
  d. information is no

Nurselady   33   1 Reply

dr claude

Lambda compares the number of errors of prediction under two separate rules. In the first rule, the ...

Lambda compares the number of errors of prediction under two separate rules. In the first rule, the ...

Lambda compares the number of errors of prediction under two separate rules. In the first rule, the independent variable is
 
  a. ignored
  b. squared
  c. taken into account
  d. expressed as a percentage

Nurselady   49   1 Reply

Yeheye

In computing Spearman's rho, the sum of the D column must be

In computing Spearman's rho, the sum of the D column must be

In computing Spearman's rho, the sum of the D column must be
 
  a. 1
  b. N
  c. 0
  d. the mean rank squared

Nurselady   26   1 Reply

Barrca

For interval-ratio level variables, the scatterplot is analogous to ___________ for nominal and ...

For interval-ratio level variables, the scatterplot is analogous to ___________ for nominal and ...

For interval-ratio level variables, the scatterplot is analogous to ___________ for nominal and ordinal level variables.
 
  a. chi square
  b. percentages
  c. row marginals
  d. bivariate tables

Nurselady   51   1 Reply

SamWats0n

Which one of the following statements best summarizes the role of deduction and induction?

Which one of the following statements best summarizes the role of deduction and induction?

Which one of the following statements best summarizes the role of deduction and induction?
 
  a. Deduction is the preferred approach.
  b. Induction is the preferred approach.
  c. In practice, scientific inquiry involves an alt

Nurselady   60   1 Reply

jtmassey08

Jenny agreed to participate in a study of friendship patterns. During the study she was asked to ...

Jenny agreed to participate in a study of friendship patterns. During the study she was asked to ...

Jenny agreed to participate in a study of friendship patterns. During the study she was asked to name her three best friends. Jenny could not think of anyone to name. She felt awful because she suddenly realized that she had no friends. This research

Nurselady   60   1 Reply

mikeyp