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Four buses carrying 155 high school students arrive to Montreal. The buses carry, respectively, 40, 42, 25, and 48 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carryingthis randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y:
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
A market researcher wants to find the 99% Confidence Interval for the average number of hours people spend online each day.
Five homes were recently sold in Oxnard Acres. Four of the homes sold for $400,000 while the fifth home sold for $2.5 million. Which measure of central tendency best represents a typical home price in Oxnard Acres?
Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.
Bill is doing a project for you in the marketing department. In conducting his analysis regarding consumer behavior and a new product that has come out
Bay Area University enrolls MBA students in three cohort programs: Weeknight, Saturday, and Distance. Dean Ed Epstein wants to know if there is a difference in the average of the students in the three programs.
Suppose that 10 years ago the average annual expense for stock funds was 1.19 percent. Let µ be the current mean annual expense for all stock funds, and assume that stock fund annual expenses are approximately normally distributed.
A group of children can be classified according to eye color (blue, brown, green), gender (male, female), and hobby (collecting stamps, collecting baseball cards, collecting shells, collecting stickers).
Securities Exchange Commission (SEC) was $22,500, with a standard deviation of $7,500. The SEC overseers want to draw a sample of 100 accounts to help assess the impact of the fund's freeze on the account holders.
Assume you want to estimate the population proportion,p, and the estimator for the mean proportion (p-hat)= 0.34, N = 6000, and n = 1300. Find an approximate 95% confidence interval for p.
Further, 20 students get both questions 1 and 2 incorrect, 15 get both questions 2 and 3 incorrect, and 8 get both questions 1 and 3 incorrect, and 7 get all three questions incorrect. Find the probability that a randomly selected student: a) Gets..
What is the probability of receiving more than three pieces of junk mail today?
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