Assuming that the larger of two variances is in the numerator of an F-statistic, the
rejection region to test a null hypothesis is in the _________ tail of the F distribution.
A _________ sign test should be applied, if H0: π ≤ 0.50, H1: π > 0.50 and the
level of significance is 0.05.
Acceptance sampling and control charts may be based on measurements with either
______________ or ___________________.
A company was studying the demographics of their customers. As part of the study,
they collected the following variables: gender, marital status, credit rating (low,
medium, high), annual income, and age. Label each variable as qualitative or
quantitative, discrete or continuous, and nominal, ordinal, interval, or ratio.
A committee that is studying employer-employee relations proposed that each employee
would rate his or her immediate supervisor, and in turn the supervisor would rate each
employee. To test if the reactions to the survey for office and plant personnel were the
same, 120 office personnel and 160 plant personnel were selected at random.
Seventy-eight of the office personnel and 90 of the plant personnel were in favor of the
proposal. What is the value of the test statistic? Round to two decimal places.
We are interested in knowing if the following frequency distribution is normally
distributed. The population mean and standard deviation of the data are 600 and 160,
respectively.
To test the hypothesis that the frequency distribution is normally distributed, the value
of the chi-square test statistic is 12.19. What is the decision regarding the null
hypothesis tested at the .05 level of significance?