Question

The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution with a mean of 30 seconds and a standard deviation of 2.5 seconds. You wish to see if the mean time μμ is changed by vigorous exercise, so you have a group of 20 college students exercise vigorously for 30 minutes and then complete the maze. It takes them an average of x¯=29.3 seconds to complete the maze. Use this information to test the hypotheses H0:μ=30 Ha:μ≠30 Conduct a test using a significance level of α=0.01 (a) The test statistic (b) The positive critical value, z0= (c) The final conclusion is A. There is not enough evidence to support the claim.. B. There is enough evidence to support the claim.

          The time needed for college students to complete a certain
paper-and-pencil maze follows a normal distribution with a mean of
30 seconds and a standard deviation of 2.5 seconds. You wish to see
if the mean time μμ is changed by vigorous exercise, so
you have a group of 20 college students exercise vigorously for 30
minutes and then complete the maze. It takes them an average
of x¯=29.3 seconds to complete the maze. Use this information
to test the hypotheses 
H0:μ=30 
Ha:μ≠30
Conduct a test using a significance level of α=0.01
(a) The test statistic 
(b) The positive critical value, z0=
(c) The final conclusion is 
A. There is not enough evidence to support
the claim.. 
B. There is enough evidence to support the
claim.

Added by Aaron S.

Question

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