19. Assume that the length of time needed to play a round of miniature golf at...
13. Assume that the length of time needed to play a round of miniature golf at Noel's Funland is normally distributed with mean u = 45 minutes, and a standard deviation o = 10 minutes. What is the probability that a randomly selected player will require less than 55 minutes to play a round?
Question 1 of 21 4 Points You get this question on an exam: "Assume that the length of time needed to play a round of miniature golf at Noel's Funland is normally distributed with mean u = 45 minutes, and a standard deviation o = 10 minutes. If you randomly sample 25 players, what is the probability that the average for the 25 will exceed 50 minutes?" You solve the problem and get an answer. Now you are asked to...
8. Assume that the length of time needed to change the oil in a car at Fiona's Service Station is normally distributed with mean u = 15 minutes, and a standard deviation o = 5 minutes. If Fiona decides to offer a discount to those customers whose cars take the longest 20% of servicing time, what is the cutoff for the time required to receive the discount? EXCEL COMMAND
The length of time needed to complete a certain test is normally distributed with mean 23 minutes and standard deviation 11 minutes. Find the probability that it will take more than 20 minutes to complete the test.
Question 16 of 21 5 Points Assume that the length of time needed to change the oil in a car at Fiona's Service Station is normally distributed with mean u = 15 minutes, and a standard deviation o = 5 minutes. If Fiona decides to offer a discount to those customers whose cars take the longest 20% of servicing time, what is the cutoff for the time required to receive the discount? OA. 11.8 minutes B. 21.4 minutes C. 17.6...
A professor finds that for 16 randomly selected students the time needed to complete an assignment had a sample mean of 66 minutes and a sample standard deviation of 40 minutes. If the time needed to complete the assignment is normally distributed, then the standard error of the mean is a. 5 b. 20 c. 16 d. 10
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(1 point) How many rounds of golf do those physicians who play golf play per year? A survey of 12 physicians revealed the following numbers: 7, 41, 16, 3, 32, 41, 19, 15, 18, 33, 14, 50 Estimate with 97% confidence the mean number of rounds played per year physicians, assuming that the population is normally distributed with a standard deviation of 6. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You...
(1 point) How many rounds of golf do those physicians who play golf play per year? A survey of 12 physicians revealed the following numbers: 5, 44, 16, 1, 32, 41, 22, 15, 22, 15, 19, 29, 11, 52 Estimate with 95% confidence the mean number of rounds played per year by physicians, assuming that the population is normally distributed with a standard deviation of 8. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You...
Ashbrook Golf Course wants to estimate the mean time for a round of golf for all golfers at their course. They wish to estimate the population mean time with a margin of error of 1.85 minutes. The standard deviation from a small pilot study is estimated at 11.15 minutes. What minimum sample size should Ashbrook use if they want to be 95% confident of the result? (Remember your units) (2 points) D eC - Format VBI U - n =...
Question 12 pts The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 6 minutes to select a shoe purchase. Is this outcome unusual? Group of answer choices Probability is 0.88, which is usual as it is greater than 5% Probability is 0.12, which is usual as it is not...