Statistics and Probability

Measures of __________ measure the tendency of the distribution to have elongated tails.

Measures of __________ measure the tendency of the distribution to have elongated tails.

Measures of __________ measure the tendency of the distribution to have elongated tails.
 
  A) association B) central tendency C) skewness D) variation

Q. 2

A survey is conducted to determine the

medjed   7   2 Replies

medjed

If A and B are independent, then P(AB) = P(A) or P(BA) = P(B). Indicate whether the statement is ...

If A and B are independent, then P(AB) = P(A) or P(BA) = P(B). Indicate whether the statement is ...

If A and B are independent, then P(AB) = P(A) or P(BA) = P(B).
  Indicate whether the statement is true or false

NERD   8   1 Reply

umass508

When one variable increases and the other decreases, we say that there is a(n) ____________________ ...

When one variable increases and the other decreases, we say that there is a(n) ____________________ ...

When one variable increases and the other decreases, we say that there is a(n) ____________________ relationship between these two variables.
 Fill in the blank(s) with correct word

bribery   8   1 Reply

sophiakhalid12

What is a power curve and how is it applicable to hypothesis testing?

What is a power curve and how is it applicable to hypothesis testing?

What is a power curve and how is it applicable to hypothesis testing?

love2211   8   1 Reply

DCAV1

For a selected month, the average kilowatt hours used for 49 residential customers showed that is ...

For a selected month, the average kilowatt hours used for 49 residential customers showed that is ...

For a selected month, the average kilowatt hours used for 49 residential customers showed that is 1160 and s is 1085 . Compute a 98 confidence interval estimate for the true mean. ____________________ to ____________________
 Fill in the blank(

aggotfay   8   2 Replies

aggotfay

If P(A) = 0.25 and P(B) = 0.60, then P(A and B) is:

If P(A) = 0.25 and P(B) = 0.60, then P(A and B) is:

If P(A) = 0.25 and P(B) = 0.60, then P(A and B) is:
 a. 0.15.
  b. 0.35.
  c. 0.85.
  d. Cannot be determined from the information given.

jprust87   8   2 Replies

jprust87

N = 360; p = 4/5 : (Multiple Choice)

N = 360; p = 4/5 : (Multiple Choice)

n = 360; p = 4/5
 
  A)  = 6.83 B)  = 7.59 C)  = 16.97 D)  = 57.6

clcharleston   8   1 Reply

takirahh_

The sample size is n = 2 and is not known.

The sample size is n = 2 and is not known.

The sample size is n = 2 and  is not known.
 
  A) No B) Yes

Mserna19   8   1 Reply

derrickpate22

Two events A and B are said to be mutually exclusive if:

Two events A and B are said to be mutually exclusive if:

Two events A and B are said to be mutually exclusive if:
 a. P(AB) = 1
  b. P(AB) = P(A)
  c. P(A and B) =1
  d. P(A and B) = 0

Q. 2

If the events A and B are independent with P(A) =

fitscarlet   8   1 Reply

tdun18

What proportion of respondents who had at least some college education also had high confidence? ...

What proportion of respondents who had at least some college education also had high confidence? ...

What proportion of respondents who had at least some college education also had high confidence?
 
  A) 0.239
  B) 0.210
  C) 0.364
  D) 0.636

Q. 2

The value of the correlation c

judahblumbergs   8   2 Replies

judahblumbergs

A panel of coaches ranks the high school football teams in a particular state each week. The panel ...

A panel of coaches ranks the high school football teams in a particular state each week. The panel ...

[html]A panel of coaches ranks the high school football teams in a particular state each week. The panel unanimously agrees on which five teams should comprise the top five but not on the order. In how many different ways can the coaches rank the top

melinoma86   8   1 Reply

mnp2357

A remedial program evenly enrolls tradition and non-traditional students. If a random sample of 4 ...

A remedial program evenly enrolls tradition and non-traditional students. If a random sample of 4 ...

A remedial program evenly enrolls tradition and non-traditional students. If a random sample of 4 students is selected from the program to be interviewed about the introduction of a new on-line class, what is the probability that all 4 students selec

ejohnson3310   9   1 Reply

lsellers6

Given that z is a standard normal random variable and that the area to the right of z is 0.1949, ...

Given that z is a standard normal random variable and that the area to the right of z is 0.1949, ...

Given that z is a standard normal random variable and that the area to the right of z is 0.1949, then the value of z must be:
 a. 0.51.
  b. -0.51.
  c. 0.86.
  d. -0.86.

kate lynn   9   2 Replies

kate lynn

Which type of evaluation research is best used in the early implantation stages of the program or ...

Which type of evaluation research is best used in the early implantation stages of the program or ...

Which type of evaluation research is best used in the early implantation stages of the program or policy?
 
  a. needs assessment
  b. formative
  c. cost benefit
  d. process
  e. none of these

bbless888   9   1 Reply

imtherealslimsh

Which of the following problems can arise when intuition differs from relative frequency?

Which of the following problems can arise when intuition differs from relative frequency?

Which of the following problems can arise when intuition differs from relative frequency?
 a. Always thinking that a coincidence has a low chance of occurring.
  b. The gambler's fallacy.
  c. Confusion of the inverse.
  d. All o

LMauney@UOR   9   1 Reply

ChristopherRen

The evening host of a dinner dance reached into a bowl, mixed all the tickets around, and selected ...

The evening host of a dinner dance reached into a bowl, mixed all the tickets around, and selected ...

The evening host of a dinner dance reached into a bowl, mixed all the tickets around, and selected the ticket to award the grand door prize. What sampling method was used?
 
  A) simple random sample B) systematic sample
  C) stratifi

pweller2017   9   3 Replies

vangsue16

Which of the following is not a reason for the need for sampling?

Which of the following is not a reason for the need for sampling?

Which of the following is not a reason for the need for sampling?
 
  A) It is usually too time consuming to look at the whole population.
  B) It is always more informative by investigating a sample than the entire population.
 

ratus   9   2 Replies

ratus

Determine the value of error variance.

Determine the value of error variance.

Determine the value of error variance.
 
  A) 6.00
  B) 0.0018
  C) 0.011
  D) 9.26

Q. 2

Find the 95 confidence interval for the difference in the means of the two populations.

buffy415   9   1 Reply

MeowMeow

Let be a particular value of 2. Find the value of such that P( 2> ) = .10 for

Let be a particular value of 2. Find the value of such that P( 2> ) = .10 for

[html]Let

barry1999   9   1 Reply

Va97001

Given v1 = 9 and v2 = 5, find P(F > 6.68).

Given v1 = 9 and v2 = 5, find P(F > 6.68).

[html]Given v1 = 9 and v2 = 5, find P(

ujesssss   9   1 Reply

sliceofoctopi

From a random sample of workers at a large corporation you find that 58% of 200 went on a vacation ...

From a random sample of workers at a large corporation you find that 58% of 200 went on a vacation ...

[html]From a random sample of workers at a large corporation you find that 58% of 200 went on a vacation last year away from home for at least a week.

An approximate 95% confidence interval is (0.50,

zar   9   1 Reply

anthead

True or false? The F-value F0.01 has area 0.99 to its left.

True or false? The F-value F0.01 has area 0.99 to its left.

True or false? The F-value F0.01 has area 0.99 to its left.

▸ True

▸ False

shaerovira   9   1 Reply

urbacore

In the context of a two-proportions z-test, explain what each of the following symbols represents:

In the context of a two-proportions z-test, explain what each of the following symbols represents:

[html]In the context of a two-proportions z-test, explain what  each of the following symbols represents:

Hernando G.   9   1 Reply

n00835996

N = 81 s2 = 625 H0: 2 = 500 Ha: 2 500 The p-value is between _____.

N = 81 s2 = 625 H0: 2 = 500 Ha: 2 500 The p-value is between _____.

n = 81 s2 = 625 H0: 2 = 500 Ha: 2  500 The p-value is between _____.
 a. .025 and .05
  b. .05 and .1
  c. .1 and .2
  d. .2 and .3

aggotfay   10   2 Replies

aggotfay

If P(A) = .62, P(B) = .47, and P(A B) = .88; then P(A B) =

If P(A) = .62, P(B) = .47, and P(A B) = .88; then P(A B) =

If P(A) = .62, P(B) = .47, and P(A  B) = .88; then P(A  B) =
 a. .291
  b. 1.970
  c. .670
  d. .210

sdaggy1   10   2 Replies

sdaggy1

Which of the following is true about f(x) when X has a uniform distribution over the interval a, b? ...

Which of the following is true about f(x) when X has a uniform distribution over the interval a, b? ...

Which of the following is true about f(x) when X has a uniform distribution over the interval a, b?
 a. The values of f(x) are different for various values of the random variable X.
  b. f(x) equals one for each possible value of X.
 

alexisblack   10   1 Reply

kwengert

Which situation identifies when to use pie charts and/or bar charts?

Which situation identifies when to use pie charts and/or bar charts?

Which situation identifies when to use pie charts and/or bar charts?
 a. You want to describe a single set of data.
  b. Your data is nominal.
  c. You want to show the number or the percentage of individuals in each category.
 

cmsx27   10   1 Reply

syaar

In explaining students' test scores, which of the following independent variables would not best be ...

In explaining students' test scores, which of the following independent variables would not best be ...

In explaining students' test scores, which of the following independent variables would not best be represented by a dummy variable?
 a. Gender
  b. Race
  c. Number of hours studying for the test
  d. Marital status

arichman7730   10   1 Reply

sweetpeajezzy

What is a factor?

What is a factor?

What is a factor?

CTaustin   10   1 Reply

gomeza

What is the probability that no stockholders are homemakers?

What is the probability that no stockholders are homemakers?

What is the probability that no stockholders are homemakers?

nameless23   10   1 Reply

suarezs1

If a sample containing 12 observations is taken from a normally distributed population and a 99 ...

If a sample containing 12 observations is taken from a normally distributed population and a 99 ...

If a sample containing 12 observations is taken from a normally distributed population and a 99 confidence estimate for is needed, the appropriate t-score is:
 a. 2.681.
  b. 2.718.
  c. 3.169.
  d. 3.055.
  e. 3.106.

love2211   10   1 Reply

tiss9889

If a sample containing 30 observations is taken from a normally distributed population and a 98 ...

If a sample containing 30 observations is taken from a normally distributed population and a 98 ...

If a sample containing 30 observations is taken from a normally distributed population and a 98 confidence estimate for is needed, the appropriate t-score is:
 a. 2.247.
  b. 2.756.
  c. 2.462.
  d. 2.750.
  e. 2.330.

CTaustin   10   1 Reply

somedaysunday

N = 36; p = .2 : (Multiple Choice)

N = 36; p = .2 : (Multiple Choice)

n = 36; p = .2
 
  A)  = -0.01 B)  = 6.52 C)  = 2.40 D)  = 5.67

Brutusandmoose   10   1 Reply

hahauebf

A manufacturer claims that fewer than 6 of its fax machines are defective. In a random sample of 97 ...

A manufacturer claims that fewer than 6 of its fax machines are defective. In a random sample of 97 ...

A manufacturer claims that fewer than 6 of its fax machines are defective. In a random sample of 97 such fax machines, 5 are defective. Find the P-value for a test of the manufacturer's claim.
 
  A) 0.1591 B) 0.3264 C) 0.3409 D) 0.1736

zns889   10   1 Reply

tiss9889

N = 168, x = 96 : (Multiple Choice)

N = 168, x = 96 : (Multiple Choice)

n = 168, x = 96
 
  A) 0.131 B) 0.0748 C) 0.0673 D) 0.00286

strobro   10   1 Reply

Yatesm

If Y ' = 2.2X - 18, then Y ' for X = 90 is .

If Y ' = 2.2X - 18, then Y ' for X = 90 is .

If Y ' = 2.2X - 18, then Y ' for X = 90 is .
 
  a. +198.0
  b. -180.0
  c. +180.0
  d. +216.0

Skoochy   10   1 Reply

ruff

In the equation Y = -0.4X + 8, the value of Y will be when X = 2.

In the equation Y = -0.4X + 8, the value of Y will be when X = 2.

In the equation Y = -0.4X + 8, the value of Y will be when X = 2.
 
  a. 7.2
  b. 0.0
  c. 8.0
  d. 8.8

kate lynn   10   1 Reply

preetpatel94

The alternative hypothesis for the interaction of factors A and B in a 3 4 between-subjects ...

The alternative hypothesis for the interaction of factors A and B in a 3 4 between-subjects ...

The alternative hypothesis for the interaction of factors A and B in a 3  4 between-subjects analysis of variance is H1:
 
  a. All AB  0
  b. All (AB - A - B + G) = 0
  c. Not all (AB - A - B + G) = 0
  d. Not all (AB + A +

SnowQueen   10   1 Reply

umass508

One advantage of pretest-posttest experiments is the ability to separate the effects of the ...

One advantage of pretest-posttest experiments is the ability to separate the effects of the ...

One advantage of pretest-posttest experiments is the ability to separate the effects of the independent variable from maturation.
 
  a. True
  b. False
  Indicate whether the statement is true or false

kdiddy   10   1 Reply

Fsujohnmans

An early step involved in doing science is to specify the goals of inquiry.

An early step involved in doing science is to specify the goals of inquiry.

An early step involved in doing science is to specify the goals of inquiry.
 
  a. True
  b. False
  Indicate whether the statement is true or false

daniellemaslon   10   2 Replies

daniellemaslon