Mathematics, 24.02.2020 19:49 theoretical0315
Hotel managers wish to learn the average length of stay of all visitors that are senior citizens. A statistician determines that to calculate a 90% confidence level estimate of the average length of stay to within +/- 1.5 days, a total of 65 senior visitors’ check-in/check-out records will have to be examined. How many records should be looked at to obtain a 90% confidence level estimate to within +/- 0.5 days?
Answers: 1
Another question on Mathematics
Mathematics, 22.06.2019 03:00
Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?
Answers: 3
Mathematics, 22.06.2019 04:00
Michael and imani go out to eat for lunch if their food and beverages cost 25.30 and there is an 8% meals tax how much is the bill
Answers: 1
Mathematics, 22.06.2019 04:40
The discrete random variables x and y take integer values with joint probability distribution given by f (x,y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x,y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).
Answers: 2
You know the right answer?
Hotel managers wish to learn the average length of stay of all visitors that are senior citizens. A...
Questions
History, 29.12.2020 14:00
History, 29.12.2020 14:00
Mathematics, 29.12.2020 14:00
Chemistry, 29.12.2020 14:00
Mathematics, 29.12.2020 14:00
Mathematics, 29.12.2020 14:00
Mathematics, 29.12.2020 14:00
