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To verify that an observed frequency distribution is normally distributed, a ________
statistic is used to test the hypothesis that the sample data is normally distributed.
The test statistic used to compare two variances is the ___________ statistic.
A major credit card company has determined that customers charge between $100 and
$1,100 per month. If the average monthly amount charged is uniformly distributed, the
third quartile of the distribution would be _______.
If the coefficient of correlation is 0.80, the coefficient of determination is _____.
A research firm conducted a survey to determine the mean amount people spend at a
popular coffee shop during a week. They found the amounts spent per week followed a
normal distribution with a population standard deviation of $4. A sample of 64
customers revealed that the mean is $25. What is the 99% confidence interval estimate
of ?
If we eliminate trend, cyclical, and irregular variation from a monthly sales series, only
the ___________________ time series component remains.
