A normal population has mean µ = 7 and standard deviation o = 5.(a) What proportion of the population is less than 19?(b) What is the probability that a randomly chosen value will be greater than 4?Round the answers to four decimal places.Part 1 of 2The proportion of the population less than 19 isPart 2 of 2XThe probability that a randomly chosen value will be greater than 4 is

Population mean=7Population standard deviation=5

Answered: A normal population has mean µ = 7 and…

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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Standardized tests: In a particular year, the mean score on the ACT test was 20.8 and the standard deviation was 3.8. The mean score on the SAT mathematics test was 518 and the standard deviation was 116, The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places. Part 1 of 4. (a) Find the z-score for an ACT Score of 20. The z-score for an ACT score of 20 is 0.21 Part: 1/4 Part 2 of 4 (b) Find the z-score for a SAT score of 592. The z-score for an SAT score of 592 is
Height and weight: A national public health agency study states that the mean height for adult men in the United States is 68.2 inches with a standard deviation of 8 inches, and the mean weight is 194.8 pounds with a standard deviation of 63.8 pounds. Part: 0/3 Part 1 of 3 (a) Compute the coefficient of variation for height. Round the answer to at least three decimal places. The coefficient of variation for height is 6 LE d
Heart Rates For a certain group of individuals, the average heart rate is 70 beats per minute. Assume the variable is normally distributed and the standard deviation is 4 beats per minute. If a subject is selected at random, find the probability that the person has the following heart rate. Use a graphing calculator. Round the answers to four decimal places. Part: 0 / 3 0 of 3 Parts Complete Part 1 of 3 Between 65 and 73 beats per minute. =P<65<X73 ??
Part C
11 Scores on a dental anxiety scale range from zero (no anxiety) to 20 (extreme anxiety). The scores are normally distributed distributed with a mean of 11 and a standard deviation of four. Find the Z score for the given score on this dental anxiety scale. 5 z5= ____ (Type an integer or a decimal)
2448 You'd like to test the null hypothesis that the means of the two samples (column A and column B) are the same. The alternative hypothesis is that they are not the same. You have no reason to believe that the standard deviations of the two samples are equal. Test at the alpha = 0.10 level. After using Excel, what do you conclude? Are the means the same? Group of answer choices You cannot reject the null hypothesis. Therefore, you conclude that the means of the two populations are different. You reject the null hypothesis. Therefore, you conclude that the means of the two populations are the same. You reject the null hypothesis. Therefore, you conclude that the means of the two populations are different. You cannot reject the null hypothesis. Therefore, you conclude that the means of the two populations are the same. X1 X2 102.04 96.13 100.47 97.63 103.17 95.42 95.09 104.41 103.81 102.08 95.36 103.33 103.38 112.25 100.26 96.93 97.24 100.19 99.61…
X Question 13 Let X be a continuous random variable. Let's denote the p-th percentile of X as p%. For what value a, 160% = IQ? α = 0.60 X (Round the answer to 2 decimal places)
Question #1: If the average yield of yellow corn is 800 kg/du, and the standard deviation is 40 kg. Assuming that the amount of the crop follows a normal distribution. What is the probability that a plant yields? 1- Between 778 and 834 kg? (sketch) 2- More than 810 kg? (sketch) Please solve these two parts
question 1 and 2
#21
Test scores carry a mean of 550 and a standard deviation of 125 normally distributed. What proportion of the population exceeds 700? Round to at least 4 decimal places. How do I set this problem up and what steps do I need to take to solve it? Please help, I am stuck! Thank you!

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A normal population has mean µ = 7 and standard deviation o = 5. (a) What proportion of the population is less than 19? (b) What is the probability that a randomly chosen value will be great Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 19 is X