Let z be a normal random variable with a mean of 0 and a standard deviation of 1. Determine P(z)<=(1.4)
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Let z be a normal random variable with a mean of 0 and a standard deviation of 1. Determine P(z)<=(1.4)
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- A normal distribution has mean u= 56 and standard deviation o = 20. Find and interpret the z-score forx=59. The z-score for x = 59 is So 59 is standard deviations (Choose one) v the mean u = 56.Prob-6 To avoid any high-speed imbalance in a rotating shaft; it needs to have a variance of its diameter below 0.0004 mm². The shaft diameter has been measured at 16 equally distributed locations, with a standard deviation of 0.018 mm. Is the shaft acceptable to the customer with 95% conf. level? Justify your answer! Sol:Try Again Suppose that the scores on a reading ability test are normally distributed with a mean of 70 and a standard deviation of 9. What proportion of individuals score at most 65 points on this test? Round your answer to at least four decimal places. 0.0599 Explanation Recleck © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use I Privacy Center I Accessibil MacBook Air DII 80 PSC F11 F10 F6 F7 F2 F3 F4 F5 F1 * @ # $ %3D 1 2 3 4 5 6 7 8.
- Mason earned a score of 226 on Exam A that had a mean of 250 and a standard deviation of 40. He is about to take Exam B that has a mean of 550 and a standard deviation of 25. How well must Mason score on Exam B in order to do equivalently well as he did on Exam A? Assume that scores on each exam are normally distributed.The police reported that the average driver exceeds the 50 miles per hour speed limit by more than 9 miles per hour on the busiest street in a small town. A sample of 63 randomly selected cars were clocked by airplane radar. The average speed was 57.5 miles per hour, and the standard deviation of the speeds was 4.17 miles per hour. Determine if the average speed is greater than what the police department reported. Which parameter(s) are you given? Mark all that apply. p μ σ none Which statistic(s) are you given? Mark all that apply. ¯x ˆp ˆq s x none What is the problem asking you to do? Estimate a parameter Test a given parameterPls help ASAP ASAP.
- llustration 17.8. For a binomial distribution the mean is 6 and standard deviation is 2. Write out all the terms of the distri- bution.n=16 mean number of television per household is 4 with a standard deviation of 1 television. using chebychev's theorem, detemine at least how many households have between 2 and 6 television.Jeremiah earned a score of 530 on Exam A that had a mean of 450 and a standard deviation of 40. He is about to take Exam B that has a mean of 63 and a standard deviation of 20. How well must Jeremiah score on Exam B in order to do equivalently well as he did on Exam A? Assume that scores on each exam are normally distributed.
- Plzz explain. With details.Assume that the mean height of men in the United States is 70 inches, with a standard deviation of 3 inches. A particular man is 80 inches tall. Find the z-score of his height. (Round to two decimal places.)EPA studies of fuel consumption indicate compact car mileage to be normally distributed with a mean of 25.7 and a standard deviation of 6 mpg. Identify the Excel statement that will find the percentage of compact cars that get between 23 and 38 mpg. Use the file, if needed, to work your problem solution. TestScratch xlsx O =[NORM DIST(-0.45)+NORM.DIST(2.05)]*100 O =[1-NORM DIST(-0.45)-NORM.DIST(2.05)]*100 O =NORM DIST(-0.45)-NORM DIST(2.05)]*100 O =[1-NORM DIST(23)-NORM DIST(38)]*100 O =NORM DIST(23)-NORM DIST(38)]*100