Z-score value near zero
If a sample mean corresponds to z-score value near zero, then you can conclude that the sample mean is relatively close to the population mean.
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In order to apply the chi-square test of independence, we prefer to have
Two independent random samples resulted in the following. Determine the estimate for the standard error for the difference between two means. (Give your answer correct to two decimal places.)
Consider the following. (Give your answers correct to two decimal places.) Find the t value t (16, 0.99).
For any population, a z-score of +1.00 corresponds to a location exactly 10 point above the mean.
Employ the computational formula to compute the requested items for the following sample data.
The mean shoulder girth is 108.20 cm with the standard deviation of 10.37 cm. The mean height is 171.14 cm with standard deviation of 9.41 cm. The correlation between height and shoulder girth is 0.666.
Because not all airline passengers show up for their reserved seat, an airline sells 140 tickets for the flight that holds only 130 passengers. The probability that the passenger doesn't show up is 0.08, and passengers behave independently.
Suppose that the mean score on the certain aptitude test across the nation is 100, and that the standard deviation is 20 points. Determine the probability that the mean aptitude test score for the randomly chosen group of 150 8th graders is betwee
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