CNNBC recently reported that the mean annual cost of autoinsurance is 983 dollars. Assume the standard deviation is106 dollars. You will use a simple random sample of 125auto insurance policies.Find the probability that a single randomly selected policyhas a mean value between 991.5 and 1007.7 dollars.P(991.5 < X < 1007.7) =Find the probability that a random sample of size n = 125has a mean value between 991.5 and 1007.7 dollars.P(991.5 M 1007.7) =<Enter your answers as numbers accurate to 4 decimalplaces.

Answered: 06 dollars. You will use a simple…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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About 7% of the population has a particular genetic mutation. 1000 people are randomly selected. Round your answer to three decimal places. (a) Find the mean for the number of people with the genetic mutation in such groups of 1000. (b) Find the standard deviation for the number of people with the genetic mutation in such groups of 1000. Submit Question
About 13% of the population has blue eyes. 1700 people are randomly selected. a. Find the mean number of people with the blue eyes in such groups of 1700. b Find the standard deviation for the number of people with blue eyes in such groups of 1700. If possible, round to 1 decimal place.
105, 82, 94.5, 72.5, 92, 91, 52, 86, 100, 96, 98, 109, 96, 36, 98, 95
If n=7 (days in a week) and p=0.45 (the probability that the food truck operates on a single day), determine the theoretical mean and standard deviation for the number of days open in a week. Use Excel and the information given in part above (n=7, p=.45) to determine the probability that the number of days open in a week is 5 days.
K A commuter tallied the time to work for 200 days and found that it resembled a normal curve. The mean time was 50 minutes, and the standard deviation was 2 minutes. For the 200-work-day experiment, find the percent of time commuting to work less than 44 minutes. 44 Minutes to Commute to Office 1 46 48 68%- 95% 99/7% 50
The number of ants per acre in the forest is normally distributed with mean 45,000 and standard deviation 12,005. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible. please answer all 3 subs B, C, and D round all answers to 4 decimal place where possible thank youb. Find the probability that a randomly selected acre in the forest has fewer than 54,589 ants. c. Find the probability that a randomly selected acre has between 48,168 and 56,283 ants. d. Find the first quartile. ants (round your answer to a whole number)
This is a standard deviation contest. You must choose four numbers from the whole numbers 0 to 9, with repeats allowed. Choose four numbers that have the smallest possible standard deviation. Chose four numbers that have the largest possible standard deviation. Is more than one choice correct in either? Explain.
Suppose that the distance of fly balls hit to the outfielder ( in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls.a. In words define the random variable. X________.b. What is the probability that the 49 balls traveled an average at least of 240 feet. Include a complete shaded graph, and write the probability statement. c. Find the 90th percentile of the distribution of the average of 49 fly balls.
81. According to a recent Pew Research poll, 75% of millennials (people born between 1981 and 1995) have a profile on a social networking site. Let X = the number of millennials you ask until you find a person without a profile on a social networking site. a. Describe the distribution of X. b. Find the (i) mean and (ii) standard deviation of X. c. What is the probability that you must ask ten people to find one person without a social networking site? d. What is the probability that you must ask 20 people to find one person without a social networking site? e. What is the probability that you must ask at most five people?
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