HW7 - (e) Do you reach the same conclusion using the...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Homework 7 Due: Monday - June 13, 2011 Problems from the book 9-16 (a,b), 9-23, 9-24, 9-28 Additional Problem #5. You wish to perform the hypothesis test H 0 : ± = 2 H A : ± < 2 with an ² -level = 0.10. You obtain a sample of size 25 independently from a population with standard deviation ³ = 10. (a) What is the distribution of the sample mean ± X if H 0 is true? (b) What is the critical value for the statistic test? (c) What values of sample mean will you reject the null hypothesis? (d) If your sample mean is -1, what is the p-value?
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (e) Do you reach the same conclusion using the critical value or the p-value? (f) Perform the same hypothesis test as above, but now change the alternative hypothesis to 6 = 1 (two-sided). Do you reach the same conclusion? (g) Suppose now that you do not know the standard deviation of the population and just have an estimate based on the sample ( s = 9 : 6). What would be the answer for question (f)? 1...
View Full Document

Ask a homework question - tutors are online