Posted by Jennifer on Friday, April 24, 2009 at 2:18am.
A sample of 27 blue M&Ms has a mean weight of 0.8560 grams. Assume that is known to be 0.0565 g. Consider a hypothesis test that uses a 0.05 significance level to test the claim that the mean weight of all M&Ms is equal to 0.8535 grams (the weight necessary so that bags of M&Ms have the weight printed on the package).
a)What is the test statistic?
b)What is the critical value.
c)What is the Pvalue?
d)What is the conclusion about the null hypothesis (reject, fail to reject)?
e)Give the final conclusion in simple nontechnical terms.

Stats  PsyDAG, Friday, April 24, 2009 at 11:19am
To get P = .05, Ho needs to have μ ± 1.96 SD, Reject Ho, if value is outside that range.
P is determined by Z score = (Xμ)/SD. Look up value in "area under normal distribution" in back of your stats text.
Is "that" your SD?
I hope this helps. If not, repost with more questions. Thanks for asking.
Answer This Question
Related Questions
 Statistics  A manufacturer makes ball bearings that are supposed to have a mean...
 statistics  a manufacturer of detergent claims that the contents of the boxes ...
 statistics  a manufacturer of detergent claims that the contents of the boxes ...
 STATS  Given a sample size of 18, with sample mean 660.3 and sample standard ...
 statistics  A coin mint has a specification that a particular coin has a mean ...
 statistics  The owner of a bottling company is considering buying a new ...
 statistics  Given a sample size of 38, with sample mean 660.3 and sample ...
 statistics  The owner of a bottling company is considering buying a new ...
 Statistics  A study was conducted to investigate relationships between ...
 math/stats  Which of the following statements are true? (A) In a twotail test ...
More Related Questions