1In hypothesis testing the statistical conclusion is either to reject or not
to reject the null hypothesis based on the sample data. Which of the
following statements is true?
The conclusion is always subject to
error because it is based on sample data.
2If a company wants to prove that the proportion (p) of its
revenues from overseas operations is more than 18%, the null
and alternate hypotheses are
H0: p = 0.18 and H1: p > 0.18
3A test of the
hypotheses, H0: p =
0.18 and H1: p > 0.18 is
a
one-tailed test
4
The dean of a business school claims that the average starting salary of its graduates is more than 85(in $000’s). It is known that the population standard deviation is 10 (in $000’s). Sample data on the starting salaries of 64 randomly selected recent graduates yielded a mean of
88(in $000s). What is the value of the sample test statistic? The dean of a business school claims that the average starting salary of its graduates is more than 85(in $000’s). It is known that the population standard deviation is 10 (in $000’s). Sample data on the starting salaries of
64 randomly selected recent graduates yielded a mean of 88(in $000s). What is the value of the sample test statistic?
2.4
5The dean of a business school claims that the average starting salary of its graduates is more than 85 (in $000’s). It is known that the population standard deviation is 10 (in $000’s). Sample data on the starting salaries of 64 randomly selected recent graduates yielded a mean of 88 (in $000s).
What is the p-value for the hypothesis test to check out the dean’s claim?
0.0082
