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3. According to the College Board's report, the average tuition and fees at four year private colleges and universities in the United States was $18,273 for the academic year 2002 - 2003 and the standard deviation was $2100. For a random sample of 100 four year private U.S. colleges:a. What is the mean of the sampling distribution?b. What is the standard deviation of the sampling distribution?c. What is the probability that the mean tuition and fees of the sample is greater than $20,000?d. What is the probability that the mean tuition and fees of the sample is less than $16,000?e. What is the probability that the mean tuition and fees of the sample is within $550 of the population mean?
Mauricio Cruz, a wine merchant for Cruz's Spirits Emporium, wants to determine if the average price of imported wine is less than the average price of domestic wine.
The heights in centimeters of 5 students are: 165, 175, 176, 159, 170. The sample median and sample mean are respectively:
This shuttle component functions successfully provided that at least one of the n systems functions properly. Find the probability that this shuttle component functions successfully if n - 2.
What is the probability that the poll gets a sample in which fewer than 45% say they do not get enough time for themselves. Show your method.
Three unrelated people go for dinner to a Chinese restaurant which uses MSG in its food. Each person has a 10% probability of developing an adverse reaction to the MSG.
Remaining the same value. Estimate the probability at least two of the stocks increase in value. Estimate the probability at least two of the stocks increase in value.
Find the probability that the number of who consider themselves basketball fans is :
What linear transformation will change sixth grade scores x into new scores xnew= a+bx that have the desired mean and standard deviation?
If the sample mean is 12.7 oz. and the sample standard deviation is 0.70 oz., find the 95% confidence interval of the true mean.
Develop a probability for the number of students in the sample who watch soap operas.
A quality control engineer wanted to estimate the mean weight (in grams) of M&M candies being produced on a certain machine in the factory. After collecting an appropriate random sample of M&M candies, he obtained the following weights:
Different methods - a traditional method, and a web-based self-paced method. Can he conclude, at α = .05, that the test scores in the web-based self-paced method are lower?
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