2. In a problem of testing H, H=75 against H, u> 75, the following sample quantities are recorded n = 56; x= 77.04; s = 6.80 a) State the test statistic and find the rejection region with a = 0.05 b) Find the p-value and interpret the results.
2. In a problem of testing H, H=75 against H, u> 75, the following sample quantities are recorded n = 56; x= 77.04; s = 6.80 a) State the test statistic and find the rejection region with a = 0.05 b) Find the p-value and interpret the results.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:of treating a discase by a standard th
has a mean of 15 days. It is claimed that a new therapy can reduce the treatment ti
To test this claim, the new therapy is tried on 70 patients, and from the data of the
times to recovery, the sample mean and standard deviation are found to be 14.6 a
days, respectively.
Perform the hypothesis test using a 2.5% level of significance.
2. In a problem of testing H, u = 75
against H H >75, the following
sample quantities are recorded
n = 56%3:
x= 77.04;
-77.04%B
=6.80
a) State the test statistic and find the rejection region with a = 0.05
b) Find the p-value and interpret the results.
3. A business school clainms that students who complete a three month course ofty
course can type on average, at least 1200 words an hour. A random sample of 25
students who completed this course typed, on average, 1130 words an hour with a
standard deviation of 85 words. Assume that the typing speeds for all students wh
complete this course have an annroxma
4ismburio. Using the 5%
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