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In one class, a statistics professor wants to compare grades on the first and second
exams. This is an example of ________________ observations.
For a contingency table test of independence, the formula to compute the degrees of
freedom is_______________________________.
A company studied the commissions paid to furniture salespersons. If the standard
deviation is computed, the unit of measure used would be _________.
Among the many classes held at your college or university, your statistics class has
been selected for a study. This one class is referred to as a ____________.
A _____ chart is useful for displaying a frequency distribution for a qualitative variable.
For the following probability distribution:
The mean is _____________.
A silkscreen printing company purchases t-shirts. To ensure the quality of the shipment,
300 t-shirts are randomly selected. Fifteen are defective. What is the estimated
proportion defective in the population?
A study by a bank compared the average savings of customers who were depositors for
three years or less with those who had been depositors for more than three years. The
results of a sample are:
To test that the two groups of customers have equal savings rates, what is the p-value
for a two-tailed test?
A random variable with a Poisson distribution has one of _______ mutually exclusive
values.
For a two-tailed hypothesis test, the computed test statistic is z = 1.42. What is the
p-value?
A telemarketing firm is monitoring the performance of its employees based on the
number of sales per hour. One employee had the following sales for the last 19 hours.
For the distribution of number of sales per hour, what is the interquartile range?
The shape of the uniform distribution is ___________.
If a population is normally distributed, then the sampling distribution of the sample
means will be __________________________.
The particular result of an experiment is called a(n) _________.
