# Z-distribution.docx - Construct a 90% confidence interval...

• 7
• 100% (1) 1 out of 1 people found this document helpful

This preview shows page 1 - 3 out of 7 pages.

The preview shows page 1 - 3 out of 7 pages.
Construct a 90% confidence interval for a sampling distribution having means of {4, 4, 4, 4.2, 4.2, 4.3,4.3, 4.3, 4.4, 4.4, 4.4, 4.4, 4.5, 4.5, 4.6, 4.7, 4.7, 4.7, 4.8, 4.8, 4.8, 4.9, 4.9, 4.9, 4.9, 5, 5, 5, 5, 5, 5, 5.1, 5.1,5.1, 5.2, 5.2}. The standard deviation of the population from which these samples were drawn wasknown to be: ơ =0.357.4.558 to 4.79210% to 90%4.567 to 4.7834.577 to 4.773Construct a 95% confidence interval for a sampling distribution having means of {4, 4, 4, 4.2, 4.2, 4.3,4.3, 4.3, 4.4, 4.4, 4.4, 4.4, 4.5, 4.5, 4.6, 4.7, 4.7, 4.7, 4.8, 4.8, 4.8, 4.9, 4.9, 4.9, 4.9, 5, 5, 5, 5, 5, 5, 5.1, 5.1,5.1, 5.2, 5.2}. The standard deviation of the population from which these samples were drawn wasknown to be: ơ =0.357.4.577 to 4.7735% to 95%4.567 to 4.7834.558 to 4.792Which of the following is a characteristic of the Z-test?Follows a Z-distributionMore adaptable than t-test
Always uses a normal distribution and applied when standard deviation is known
What is the first step in finding the calculation of a confidence interval?Calculate the sample MeanWhich of the following is a characteristic of the Z-test?
Preferred when standard deviations are knownAs the confidence interval increases for the same sampling distribution, the absolute value of thecritical value ___________.remains the sameincreasesdecreasesbecomes smallerConstruct a 90% confidence interval for a sampling distribution having a mean of 25 and a size of64. The standard deviation of the population from which the samples are drawn is 4.24.02 to 25.9824.178 to 25.82224.094 to 25.90610% to 90%Which of the following is a characteristic of the Z-test?
In which of the following, do we use Z-distribution?

Course Hero member to access this document

Course Hero member to access this document

End of preview. Want to read all 7 pages?

Course Hero member to access this document

Term
Fall
Professor
NoProfessor
Tags
following changes
• • • 