Show complete solution2. Professor XY conducted a periodic examination to all her students enrolled in Statistics andProbability. The scores are normally distributed with a population standard deviation of 11.Professor XY randomly selected 130 students and obtained a mean score of 65.a. the 80% confidence interval for the population mean.b. the 98% confidence interval for the population mean.c. the 99.9% confidence interval for the population mean.

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Answered: Show complete solution 2. Professor XY…

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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A population of scores has µ = 10 and σ = 2. If every score in the population is multiplied by 4, then what are the new values for the mean and standard deviation? Group of answer choices
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34% of CSU students participate in the Statistics Games while they attend CSU. You take a random sample of 40 students. You want to determine the probability that more than 15 of them have participated in the Statistics games. Since the conditions are met, you decide to use the Normal model to find your answer. What is the mean and standard deviation of the sampling distribution?
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Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
You are applying for a job at two companies. Company A offers starting salaries with μ=$34,000 and σ=$4,000. Company B offers starting salaries with μ=$34,000 and σ=$9,000. From which company are you more likely to get an offer of $42,000 or more? Choose the correct answer below. A. Company B, because data values that lie within one standard deviation from the mean are not considered unusual. B. Company A, because data values that lie more than two standard deviations from the mean are considered unusual. C. No difference, because data values that lie more than three standard deviations from the mean are considered very unusual.
K A survey found that women's heights are normally distributed with mean 63.4 in and standard deviation 2.5 in. A branch of the military requires women's heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall? b. If this branch of the military changes the height requirements so that all women are eligible except the shortest 1% and the tallest 2%, what are the new height requirements? Click to view page 1 of the table. Click to view page 2 of the table. correct: 1 C... a. The percentage of women who meet the height requirement is (Round to two decimal places as needed.)
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