2. Using a t-distribution with given degrees of freedom find the followinga df =9,PG 22.262) –d. af = 40, P(-1.303 5IS2423)b. df = 20, P(IS1.325)e af =30 find so thatP(-rsisr)=0.95e f=24, P2-1318)Page 1 of 5

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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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Suppose that the weights of 600 male students are normally distributed with mean u = 60 kg and a = 6 kg then the number of students with weights between 54 and 66 is 190 None 410 505
49 of 2. CO 60 8 7. Fill in the table below: FiLl in the differences of each data value from the mean, then the squared lifferences. 2. I'– 1) 5. 3. -5 9. 14 7. 6. -1 25 8. 1. 49. 3) Calculate the sample standard deviation (s). 12 a) ENG 2/1 dy ins prt sc f12 delete home + backspace unu lock
Assume that females have pulse rates that are normally distributed with a mean of μ=76.0 beats per minute and a standard deviation of σ=12.5 beats per minute. Complete part a through c a) If 1 adult female is randomly selected. Find the probability that her pulse rate is less than 82 beats per minute (Round to four decimal places as needed) b) If 4 adult females are randomly selected, find the probability that they have a pulse rates with a mean less than 82 beats per minute (Round to four decimal places as needed) c) Why can the normal distribution be used in part (b) even though the sample size don't exceed 30?(options are the image below)
The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 68 minutes and a standard deviation of 14 minutes. Suppose one person at the hot springs is randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs . Round all answers to 4 decimal places where possible.a. What is the distribution of X? X ~ N(,)b. Find the probability that a randomly selected person at the hot springs stays longer then 82 minutes. c. The park service is considering offering a discount for the 5% of their patrons who spend the least time at the hot springs. What is the longest amount of time a patron can spend at the hot springs and still receive the discount? minutes.
The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 35 and a standard deviation of 10. Suppose that one individual is randomly chosen. Let X=percent of fat calories. Round all answers to 4 decimal places if where possiblea. What is the distribution of X? X ~ N(,)b. Find the probability that a randomly selected fat calorie percent is more than 31. c. Find the minimum number for the lower quarter of percent of fat calories.
The mean amount of time it takes a kidney stone to pass is 16 days and the standard deviation is 5 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(,) b. Find the probability that a randomly selected person with a kidney stone will take longer than 12 days to pass it. c. Find the minimum number for the upper quarter of the time to pass a kidney stone. days.
The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 38 and a standard deviation of 11. Suppose that one individual is randomly chosen. Let X=percent of fat calories. Round all answers to 4 decimal places if where possiblea. What is the distribution of X? X ~ N(,)b. Find the probability that a randomly selected fat calorie percent is more than 41. c. Find the minimum number for the upper quarter of percent of fat calories.
The annual cost of preschool in Camarillo is assumed to be normally distributed with a mean of $9,560, and standard deviation of $1,333. Let X be the annual tuition of a random selected preschool in Camarillo. Binomial: B, Uniform: U, Normal: N What is the distribution of X? X ~NV 9560 1333 Round the following answers to three decimal places. If a Camarillo preschool is randomly chosen, find the probability that its annual tuition is beyond $10,893. 0.159 Round the following answers to the nearest integer. The mid-50% of the Camarillo preschool cost between Part 2 of 3 If a Camarillo preschool is randomly chosen, find the probability that its annual tuition is between $8,227 and $10,227. 0.533 and Part 3 of 3
Consider the following set of three distributions, all of which are drawn to the same scale. Identify the two distributions that are normal. Of the two normal distributions, which one has the larger variation? Q 9 The two normal distributions are Ar 1. ^. where Ar 1) and (2) and (c) P) and (4) has the larger standard deviation.
Q18. If x ~ N(100, 25) and a random sample ofx of size 16 is obtained. What is the standard deviation of the distribution of the sample mean, x? A. 1.25 B V1.25 C. 25 D. V25 = 5
A variable z is normally distributed with mean 21 and standard deviation 3. Round your answers to the nearest hundredth as needed. a) Determine the z-score for z = 24. 2 3= b) Determine the z-score for z = 18. c) What value of z has a z-score of 2.67 d) What value of z has a z-score of -0.77 e) What value of r has a z-score of 07 o search
27 15. In a triavariate distribution, if r2 r3 = r31 = C. show that c lies between-and 1. = P12 = r23 = ľ31 = c (Given).

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2. Using a t-distribution with given degrees of freedom find the following f-9, Pt22262). a. df = 40, P(-1.303 sts2423) b. df = 20, Pu S1.325). e af =30 find so that K-esiS)-095 e -24, P2-1318)