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Kerri scores 677 on the SAT math test which has a mean of 500 and a standard deviation of 100. Kyle scores 28 on the ACT math test which has a mean of 18 and a standard deviation of 6. Supposing that both tests measure the same kind of ability, who has the higher score? If grading were done on a curve, what would their respective percentages be?
The following data represent scores of 50 students in the applied business statistics test. Prepare the frequency distribution table and the frequency histogram for this data set.
A psychologist is investigating the hypothesis that children who grow up as the only child in the household develop different personality characteristics than those who grow up in larger families.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Each year approximately 160 colleges compete in national concrete canoe competion. Each team should design a seaworthy canoe from a substance not known for its capacity to float. T
Does the overall data support the mayor's claim?
If an urn is selected at random and a ball is drawn, find the probability it will be red.
My question bout How do I use the TINV function within excel to back out the t-statistic for the test? Why did you use the TDIST function? I know ho to use the TINV function, but what does it mean to back out the t-statistic for the test?
The sample mean of the number of spots on the 6000 rolls, should be about If this die is rolled 6000 times, the number of times we get a 2 or a 3 should be about
Use the relative frequency approach to construct a probability distribution for the number of tests taken.
Does your analysis change if the term "average" refers to the mean? To the median? Explain what effect this misinformation might have on the perception of the nation's schools.
The null hypothesis is to be tested at 95% confidence. Determine the critical values for this test.
Compute the grouped data mean for this distribution. Use MINITAB and using the original scores, compute the raw-data mean. Use MINITAB.
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