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Question: 1. Plot the sample variances against the sample sizes, with sample size on the horizontal axis. What pattern do you see? Does this look like the points should fall on a straight line?
2. It appears that the variances are related to the sample size, but the relationship is not linear. Plot the variances against (1/sample size), the reciprocal of the sample size. Observe the pattern that appears. "Fit" a straight line through this pattern either by eye or by using linear regression. Does the straight line appear to fit well?
Determine and interpret the p-value for the test. Source: John Diamond, "Some Veterans Suffer Bone, Muscle Ailments," The Indiana Gazette, January 22, 1997, p. 5.
Plot the data on U.S. general aviation shipments (b) Describe the patterns and discuss possible causes.(c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992-2003 only.
Some students planned a get together, the budget for food was $500.00. Five of the students failed to come because of the distance ad therefore the cost of food for each member increased by $5.00.
at a dog park 35 of dogs are purebred and the rest are mixed breeds. 40 of the dogs are aggressive. at the same time we
identify the null hypothesis ho and the alternative hypothesis h1. a cereal company claims that the mean weight of the
Question 1. The percent confidence interval is the range having the percent probability of containing the actual population parameter.
a federal report find that a lie detector test given to truthful persons have a probability of .2 of suggesting that
Determine the unbiased point estimates of the mean and the standard deviation for the above sample. [Round your answer to two decimal places.]
find the range and the standard deviation correct to two decimal places. 83 96 99 99
If 48 male graduates are chosen, find the probability the sample average entry-level wage is at least $19.32.
write a brief description of a real-world example in which one measure of central tendency provides useful information
Does the number of hours a dayDA students spend watching Netflix differ from the number of hours a day DB students spend watching Netflix?
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