A random sample of 100 observations from a population with standard deviation 85
yielded a sample mean of
115.
Complete parts a through c
below.
Question content area bottom
Part 1
a. Test the null hypothesis that μ=100 against the alternative hypothesis that
μ>100,
using
α=0.05.
Interpret the results of the test.
What is the value of the test statistic?
z=enter your response here
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