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ilovephysics ilovephysics
wrote...
Posts: 518
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6 years ago
In a problem involving the hypergeometric distribution, the probability of success remains the same from trial
  to trial.
 
  Indicate whether the statement is true or false

Q. 2

A food packaging company must maintain a consistent weight per can. A quality control engineer randomly selects 60 cans of corn of the same size and records the weight of each.
 
  a. Identify the population of interest.
  b. Describe the sample.
  c. What is the variable of interest? Is it quantitative or qualitative?

Q. 3

If the multiple correlation coefficient is 0.80, then the proportion of total variation in y that can be attributed to
  the xs is _______ .
 
  Fill in the blank(s) with correct word

Q. 4

When we are comparing two populations and our two samples are such that each element of one sample
  relates to a particular element of the other sample, an appropriate nonparametric test would be the
 
  A) one-sample sign test. B) signed-rank test.
  C) Wilcoxian test (rank sums). D) U test.

Q. 5

The variance of the sampling distribution can be equal to the variance of the population.
 
  Indicate whether the statement is true or false

Q. 6

Can watching a movie temporarily raise your pulse rate? Researchers have 50 volunteers check their pulse rates. Then they watch an action film, after which they take check their pulse rates once more.
 
  Which aspect of experimentation is present in this research?
  A) blinding
  B) randomization
  C) a placebo
  D) a control group
  E) none of these

Q. 7

In constructing a frequency distribution from raw data, there will usually be between _______ and _______
  classes.
 
  Fill in the blank(s) with correct word

Q. 8

The expected value with perfect information is calculated by subtracting the maximum expected profit under
  uncertainty from _______ .
 
  Fill in the blank(s) with correct word
Textbook 
Stats: Modeling the World

Stats: Modeling the World


Edition: 4th
Authors:
Read 31 times
3 Replies

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Replies
wrote...
6 years ago
Answer to #1

FALSE

Answer to #2

a. the weights of all cans of corn of the same size
b. the weights of the 60 cans of corn chosen by the engineer
c. weight; quantitative

Answer to #3

64

Answer to #4

B

Answer to #5

FALSE

Answer to #6

E

Answer to #7

5, 15

Answer to #8

the expected profits with perfect information
ilovephysics Author
wrote...
6 years ago
All correct!
wrote...
6 years ago
Happy to help
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