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A test prep company is targeting students that scored in the bottom 5% on a certain test. If the mean score on the 100 point test was 68 with a standard deviation of 12, what would be the highest score in the lowest 5%. Assume that test scores are approximately normal.
Compute and interpret a MANOVA examining the effect of whether or not students completed the extra credit project on the total points for the class and the previous GPA.
Over a four-year period, LaKeisha Thompson purchased shares in the Oakmark I Fund. Using the following information, answer the questions that follow.
assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the
Professor Green gives two-month computer programming courses during the summer term. Students must pass a number of exams to pass the course, and each student is given three chances to take the exams
Now suppose you find that the gestational length in African American women is actually 38.5 weeks. What was the power of the test with a = 0.05.
If the below data represent the number of days? absent, x, and the final exam? score, y, for a sample of college students in a general education course
Describe a recent study where data was gathered. If possible, explain whether it is a qualitative or quantitative study, and whether the data is discrete or continuous. What type of graph would you use to describe the data and why?
a large industrial firm allows a discount on any invoice that is paid within 30 days. of all invoices 10 receive the
Consider a survey concerning the ages of 800 students in a college. The results can be summarized as follows
In the BS Lottery (which stands for "Business Statistics", of course), players choose 5 numbers out of 30. They win if they choose the same 5 numbers.
What are independent samples? What is a pooled estimate of variance and why do you need to calculate it? When do you use a dependent versus an independent sample t test?
Using a significance level of .01 to test this hypothesis, what is your decision rule?
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