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The effect of increasing the sample size. In the setting of given Exercise, suppose that we increase the sample size to 1764. Use the 95 part of the 68-95-99.7 rule to describe the variability of this sample mean. Compare your results with those you found in given Exercise.
Exercise Use the 68--95--99.7 rule. You take an SRS of size 196 from a population with mean 320 and standard deviation 21. According to the central limit theorem, what is the approximate sampling distribution of the sample mean? Use the 95 part of the 68-95-99.7 rule to describe the variability of this sample mean.
Low-altitude wind shear is a major cause of air carrier accidents in the United States. Most of these accidents have been caused by either microbursts (small-scale, low-altitude, intense thunderstorm downdrafts that impact the surface and cause st..
If a simple random sample of 80 seniors is taken, what is the probability that at most 64 of them will be accepted into college.
What is the fewest number of eggs possible in the basket? Please explain step by step how to get to the fewest number of eggs in detail on what you did?
A group of 47 randomly selected students have a mean score of 20.2 with a standard deviation of 4.6 on a placement test. Construct a 90% confidence interval for the mean score, , of all students taking the test.
The U.S. Energy Information Administration reports the following prices for regular unleaded gasoline in Germany from 2003 through 2008. Source: U.S. Energy Information Administration, Annual Energy Review 2008, p. 321.
a researcher has a report for an experiment with a sample size equal to 100 the resulting 95 prediction interval was
what is the critical f value for a sample of four observations in the numerator and seven in the denominator? use a
Provide an example of a situation from your personal or professional experience where an two-sample test of hypothesis of dependent samples would be useful in a decision-making process.
Without good measurement, statistical analysis is worthless." Do you believe it is an overgeneralization, or do you think it is accurate as written?
It declined from 28 percent to 27 percent. Married couples without children at home live in another 29 percent of suburban households. The remaining 15 percent are single-parent homes. Use the given information on type of household in 2000 to con..
At 0.01 level of significance, can we conclude that there is a difference in textbook prices across the three different outlets? Show all the steps of the hypothesis testing.
What assumptions are required in using the one-way ANOVA?- explain the meaning of each term in the equation, then use the appropriate terms from the equation in presenting and explaining the null hypotheses to be examined.
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