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1. Assume that Graduate Record Exam (GRE) scores follow a normal distribution with a mean of 1000 and a standard deviation of 200.
a. What percentage of graduates who take this exam have GRE scores greater than 750?
b. What GRE score separates the upper 30% of graduates from the other 70%?
c. Between what values are the scores of the central 90% of the graduates?
d. How likely is it that a randomly selected graduate will be one who has a GRE score greater than 1000?
2. A marketing research firm advises a new client that approximately 15% of all persons sent a sweepstakes offer will return the mailing. Suppose the client sends out 10,000 sweepstakes offers.
a. What is the probability that fewer than 1,430 of the mailings will be returned?
b. What is the probability that more than 1,600 of the mailings will be returned?
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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