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A brand name has a 50% recognition rate. Suppose the owner of brand desires to verify that rate by beginning with small sample of 7 randomly chosen consumers. Determine the probability that exactly
A student wants to measure whether her dog Muffin tends to chase her blue ball more often than she chases her red ball. The student rolls both blue ball and red ball at the same time and observes wh
Suppose that two graduating seniors, one marketing major and one an accounting major, are comparing job offers. The accounting major has an offer for $45,000 per year, and the marketing student has
Assume you want to determine the proportion of people in your community who would select Thin Mints as their favorite Girl Scout cookie. Also assume previous studies have shown this proportion to be
The following data were obtained from survey of college students. The variable Xrepresents the number of non-assigned books read during the past six months.
The following data were obtained from a survey of college students. The variable Xrepresents the number of non-assigned books read during the past six months.
Suppose X is normally distributed with mean of 5 and standard deviation of 2. Find out the value for x which solves each of the following. Round the answers to 2 decimal places.
You want to investigate whether college freshmen tend to gain 15 pounds of weight, as the "freshman fifteen" legend suggests. You recruit 25 freshmen to participate in your study. You weigh them at
Consider the estimators of X: (4/3)(Y3) and (4)(Y1) of a sample of size 3 from a population with underlying probability distribution of (1/X) for 0<Y<X. Show that these estimators are unbiased
At inspection line, several motors are inspected. It is known that defects between motors are not related. The mean of defective motor is 5 motors.
Which motor has less probability to fail before 2 years? If motor A was selected, what is the probability that motor will fail during the first 5 years?
Assume a die is rolled six times. Let X be the total number of 4's which takes place and let Y be the number of 4's in the first two tosses. Find p_(Y |x )(y). Please explain your answer.
A box of candy hearts haves 52 hearts, of which 19 are white, 10 are tan, 7 are pink, 3 are purple, 5 are yellow, 2 are orange, and 6 are green. If you select nine pieces of candy randomly from the
Given the parameters of demands, determine the optimum amount of Q to be provided? Suppose that Harriet's twin brother Harry moves in, and his preferences are identical to Harriet's. There're now fou
A lottery with 500 tickets gives one prize of $100, three prizes of $50 each, and five prizes of $25 each. Determine the expected winnings of a ticket.
The batting average of a baseball player is 0.300. He comes to bat four time. Find the probability that he will get: (a) exactly two hits; (b) at least one hit.
Whenever horse a,b and c race together, their respective probabilities of winning are 0.3, 0.5, and 0.2. They race three times.
Compute the probability she plays neither tennis nor golf. If she plays tennis, determine the probability she play golf.
Using my study in Health Care Administration, give examples of variable which would be considered discrete random variable AND another that would be considered a continuous random variable.
A large firm has 85% of its service calls made by contractor, and 10 of these calls result in customer complaints. The other 15% of the service calls are made by their own employees, and such calls
Is there visual evidence that true mean is less than 70 dBA? Explain. Must include context. Describe the null and alternative hypothesis to answer the manager's question of interest.
There are 40 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random
Assume that each transmitter behaves independently of the other transmitters. Determine the probability that the system will be working at any given time?
If selected ball is red determine the probability that it was selected from the yellow box. If selected ball is blue find the probability that it was chosen from the white box.
Determine the probability that the number of good chips is greater than 4 and less than 8. Determine the expected value of the number of good chips