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Please review the following questions and provide a detailed answer for each one. They are from Introduction to statistics. Thanks!
1. Given a standard normal variable z, find the cutoff value separating the top 2.5% of the values from the rest of the distribution.
2 Heights of men are normally distributed with mean 69 inches and standard deviation 2.8 inches. Find the height of a doorway so that only 3% of men would not fit through the door.
Membership in Mensa requires an IQ score above 131.5. Nine candidates take IQ tests and their summary results indicate that their mean IQ score is 133 (1Q scores are normally distributed with a mean of 100 and a standard deviation of 15).
3. If one person is selected from the general population, find the probability of finding someone with an IQ score of at least 133.
4. If 9 people are randomly selected from the population, find the probability that their mean IQ score is at least 133.
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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