In Chapters 7 and 8, you studied estimation and hypothesis testing. (a) What two
ID: 3350911 • Letter: I
Question
In Chapters 7 and 8, you studied estimation and hypothesis testing.
(a) What two sampling distributions are used in estimation and hypothesis testing of population means, proportions, paired differences, differences of means, and differences of proportions? (Select all that apply.)
the Student's z distribution
the standard t distribution
the standard normal distribution
the standard Student's distribution
the Student's t distribution
What are the criteria for determining the appropriate sampling distribution? (Select all that apply.)
known or unknown
known or unknown
normality
known or unknown population sizes
known or unknown population proportions
What graphics might be appropriate? (Select all that apply.)
a Student's t distribution showing the area(s) corresponding to the P-value
a scatterplot
a standard normal distribution showing the area(s) corresponding to the P-value
a standard normal distribution
a regression line
What methods of testing will you use? (Select all that apply.)
the critical P method
the P-region method
the critical region method
the P-value method
Explanation / Answer
a) The standard normal distribution and the student's t distribution are used.
Option C and Option E are correct.
b) known or unknown and normality are the criteria to determine appropriate sampling distribution.
Option A and Option C are correct.
c) Appropriate graphics will be:
a Student's t distribution showing the area(s) corresponding to the P-value
a standard normal distribution showing the area(s) corresponding to the P-value
Option A and Option C are correct.
d) The critical region method or the P - value method can be used.
Option C and Option D are correct.