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A travel agency believes that the number of people who sign up for tours to Hawaii during the Christmas-New Year's holiday season is an approximately normally distributed random variable with mean 2,348 and standard deviation 762.
For reservation purposes, the agency's management wants to find the number of people such that the probability is 0.85 that at least that many people will sign up.
It also needs 0.80 probability bounds on the number of people who will sign up for the trip.
Is a weight fain of 15 pounds of (6.8) kilograms unusual? Why or why not? If 15 pounds (or6.8kilograms) is not unusual does that support the legend of the "freshman 15"?
1. IA Credit Card Company wants to evaluate the usage of their card. They randomly selected 16 credit card holders and found that the mean amount they charged in the past twelve months was $2017, while the standard deviation was $867.
Find the probability that at most 5 defective bolts will be found in a box of 200 bolts if it is known that 2 per cent of such bolts are expected to be defective.
What is the maximum number of customers waiting in the room for the probability of 95%? What percentage of customers who must wait for a counter server to become available?
Determine how he should divide the n people into two groups to search the two sides of the mountain so that he will have the highest probability of finding the boy. How does this depend on u?
a pearson correletion of r 0.45 for a sample of n 18 individuals is large enough to conclude that there is a
What is its standard deviation of this data set? What are the upper and lower values of 67% range of the flows and how do these compare to the upper and lower values of the full range of data?
Radioactive decay. An experiment was conducted using a Geiger-Mueller tube in a physics lab. Geiger-Mueller tubes respond to gamma rays and to beta particles (electrons). A pulse that corresponds to each detection of a decay product is produced, a..
a certain disease is found in one person in 5000. if a person does have the disease the test will show a positive
suppose that the average grade for all people who take this course in statistics is 83 with a standard deviation of
PC World rated four component characteristics for 10 ultraportable laptop computers: features; performance; design; and price. Write down the estimated regression equation
What is the qualitative visible difference between the Ni nanowires (in ethylene glycol) that were exposed to ultrasound compared to those that were not? Describe what was observed.
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