Provide an appropriate response.21) One year, professional sports players salaries averaged $1.9 million with a standard deviation of $0.9 million.Suppose a sample of 400 major league players was taken. Find the approximate probability that the average salaryof the 400 players exceeded $1.1 million.A) approximately 0B) 0.7357C) approximately 1D) 0.2357

Answered: Image /qna-images/answer/53d178b5-219d-47a4-bdfc-1db681e46361.jpg please rate my answer

Answered: Provide an appropriate response. 21)…

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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D. The mean annual cost to attend a attend a college is $44,324. Assume the distribution of annual costs follows the normal probability distribution and the standard deviation is $4,590. Ninety percent of all students pay less than what amount?
Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X= the number of pairs of sneakers owned. The results are as follows: X Frequency Relative Frequency Cumulative Relative Frequency 1 2 2 5 3 8 4 12 5 12 7 1 a.) Find the sample mean x. (Round your answer to two decimal places.) b.) Find the sample standard deviation, s. (Round your answer to two decimal places.) c.) Find the first quartile. d.) Find the median. e.) find the 3rd quartile f.) What percent of the students owned at least five pairs? (Round your answer to one decimal place.) g.) Find the 40th percentile. h.) find the 90th percentile İ) Contruct a box plot of the data j) complete the columns of the chart k) construct a histogram of the data
the heights of 18-year old men are approximately normally distributed with a mean of U= 68 inches and a standard deviation of O=3. what is the probability that an 18-year-old mean selected at random is less than 65 inches tall. a .8413 b .1587 c .1389 d .8765
Find the indicated probability or percentage for the normally distributed variable. 24) A machine produces bolts with a mean diameter of 0.30 inches and a standard deviation of 0.01 inches. The diameters are approximately normally distributed. What is the probability that a randomly selected bolt will have a diameter greater than 0.32 inches? A) 0.977 B) 0.477 C) 0.046 D) 0.023
Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12. What proportion of people has diastolic blood pressures less than 80? A)0.661 B)0.338 C)0.50 D)0.75
A stock can earn a return of 10%, 15%, -5%, or 0%, each with a known probability of 25%. What is the standard deviation of this stock's return? Select one: O a. .025 b. .079 c..05 d. .00625 e..0913
The IQ of a person follows a normal distribution and has a mean of 100 and a standard deviation of 15. What percentage of the people have IQ scores between 70 and 130? A) 95% B) 50% C) 2.5% D) 68%
The salaries ofelementary school teachers are normally distributed with a mean of $32,000 and a standard deviation of $3000. If a teacher is selected at random, Find the probability that he or she makes between $ 36,000 and $38.000 Select one: a. 0.069 O b. 0.9082 c. 0.927 O d. 0.082
The mean weight of 1000 students at a certain high school is 140 pounds and the standard deviation of 10 pounds. Assuming that the weights are normally distributed. How many students weigh more than 150 pounds? Select one: O 342.3 O 343.3 O 341.3 O 344.3
According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is normally distributed with a mean of $2.39 and a standard deviation of $0.15. If you randomly pick a gas station, what is the probability the price is exactly $2.46 per gallon? A) 0.14 B) 0 C) 1 D) 0.68
Scores on in biology tests are normally distributed with the mean of 78 in a standard deviation of 8.2 find the score that represents the 61st percentile

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