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1.) The distribution of room and board expenses per year at a four year college is normally distributed with a mean of $5,850 and a std deviation of $1125. Random samples of size 20 are drawn from the population and the mean of each sample is determined. Use the central limit theorem to find the mean and std. deviation of the sampling distribution of sample means described.
2.) In a standardized IQ test, scores were normally distributed with a mean score of 100 and a std. deviation of 15.
a.) What is the lowest score that would still place a student in the top 5% of scores?
b.) What is the highest scored that would still place a person in the bottom 10% of scores?
c.) What interval would place the student in the middle 50% of scores.
The Seaboard Shipping Company has a warehouse terminal in Spartanburg, South Carolina. The capacity of each terminal dock is 3 trucks
The National Survey on Student Engagement (NSSE) has surveyed more than 400,000 students-freshmen and seniors-at 730 U.S. schools since 1999.
Of the 1755 qualified applicants, 931 were accepted, 298 were waitlisted, and 526 were turned away for lack of space. Find the relative frequency distribution of the decisions made, and write a sentence describing it.
Which of the following is a correct interpretation of the interval 12.6
At one university, the distance to students' home is normally distributed with a mean of 200 miles and a standard deviation of 25 miles.
A standard deviation of 4,000 miles. The tires carry a warranty for 35,000 miles. a. What proportion of the tires will fail before warranty expires?
A silver dollar is flipped twice, calculate the probability of each of the following occurring
Determine the probably of selecting a female or an accounting major? Which rule of addition did you apply?
1.ten years ago a study at a large midwestern university found that 18 of the students at the university were very
For a fixed sample size, how do β(11) and β (15) compare? Are these two values approximately the same or different? If they are different, which is smaller, and why?
Domestic Goats Follow Gaze Direction and Use Social Cues in An Object Choice Task," published online in Animal Behavior in January 2005
A psychologist believed that as children get older, they engage in more "inactive activities" such as playing computer games, watching TV, and surfing online.
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