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Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past
month as follows:
The Wilcoxon signed-rank test of difference is to be used.
What is the larger sum of the ranks?
For the following data, what is the interquartile range?
A new printing machine is set or calibrated to print 25 copies per minute. On each of
four days, the printer's output is measured five times. The data will be used to construct
a process control chart to monitor the printing process. The results of the printing
process are in the following table.
What is the range of the samples on Day 3?
For a straight trend line, ______________ represents the amount of change in Ŷ for
each increase of one unit in t.
Sugar is packaged in 16-ounce bags. To test the weight of the bags, a few were checked.
The mean weight was 15.95 ounces and the standard deviation was 0.5 ounces. How
many bags must the processor sample to be 99% confident that the sample mean does
not differ from the population mean by more than 0.2 ounces?
A bottle cap manufacturer with four machines and six operators wants to see if variation
in production is due to the machines and/or the operators. The ANOVA table follows.
What are the degrees of freedom for the operators?
Refer to the following breakdown of responses to a survey of room cleanliness in a
hotel.
What is the class with the greatest frequency?
The null hypothesis in the goodness-of-fit test is __________.
