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Suppose that 40% of a large number of students who have to buy a textbook for a particular course want a new copy, whereas the other 60% want a used copy. Consider randomly selecting 25 purchasers. What is the distribution of the number of students who want new books? What are the mean value and standard deviation of the number of students who want new books? What is the probability that the number of students who want new books is more than two standard deviations above the mean? The book store has 15 used book and 15 new books. If the 25 purchasers come in one by one to purchase this textbook, what is the probability that all 25 get the type of book they want from the current.
It will take 30 minutes regardless of the traffic conditions. Lynn's utility for travel time is: U(15 minutes) = 0.9, U(30 minutes) = 0.7, and U(40 minutes) = 0.2. Which route will minimize Lynn's expected travel time?
Find Probability of independent events.Consider again the auto repair rates described. If you own two cars, what is the probability that.
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
How much of the variation in the dependent variable would be explained by the independent variable in this situation? Use job satisfaction and employee turnover as the variables for this problem.
To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time.
What are the assumptions necessary to use the z-series test? What are the assumptions necessary of use the t-series test?
A campus organization will select one day of the week for an end of year picnic. Assume that the weekdays, Monday through Friday, are equally likely and that each weekend day
625 males, 398 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion.
Using convolution, determine the pdf of a continuous random variable Z where Z = X + Y. Here, X has a uniform distribution on [0, 3] and Y is a constant of value 2. Assume that X and Y are independent.
Describe the following correlation. The students with the highest grades in written French were also the students with the highest grade in spoken French.
Compute the probability which we will get the sample mean greater than 21; which is , compute P(x > 21). Compute the probability that we will get the sample mean less than 19.385; that is, compute P(x
What is the probability that the majority of the selected parents put their children who are under the age of 6 in car seats?
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