Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey,assume the mean annual salary for graduates 10 years after graduation is $176,000. Assume the standarddeviation is $31,000. Suppose you take a simple random sample of 35 graduates. Round all answers to fourdecimal places if necessary.Rectangular Snipa. What is the distribution of X? X - N(b. What is the distribution of ? T - N(c. For a single randomly selected graduate, find the probability that her salary is between $172,940 and$178,260.d. For a simple random sample of 35 graduates, find the probability that the average salary is between$172,940 and $178,260.e. For part d), is the assumption of normal necessary? O YesO No

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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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the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?
Area Under a Normal Distribution Bin... THE SCORES OF A SCIENCE TEST HAD AN AVERAGE OF 78 AND A STANDARD DEVIATION OF 3. WHAT PERCENT OF STUDENTS SCORED ABOVE AN 82? THE SCORES ON A SCIENCE TEST HAD AN AVERAGE OF 78 AND A STANDARD DEVIATION OF 3. WHAT PERCENT OF STUDENTS SCORED BETWEEN A 69 AND 79? THE SCORES ON THE SAT MATH HAD A MEAN OF 431 AND A STANDARD DEVIATION OF 117. HOW HIGH OF A SCORE DO YOU NEED TO BE IN THE TOP 10% OF ALL SCORES?
Internet Service Providers The amount that households pay service providers for access to the Internet varies quite a bit, but the mean monthly fee is $50 and the standard deviation is $20. The distribution is not Normal: many households pay a low rate as part of a bundle with phone or television service, but some pay much more for Internet only or for faster connections. A sample survey asks an SRS of 50 households with Internet access how much they pay. Let x be the mean amount paid. 1. Explain why you can't determine the probability that the amount a randomly selected household pays for access to the Internet exceeds $55. 2. What are the mean and standard deviation of the sampling distribution of x ? 3. What is the shape of the sampling distribution of x ? Justify your answer. 4. Find the probability that the average fee paid by the sample of households exceeds $55.
For the normal probability plot shown below, the correlation between the random variable X and expected z-scores is 0.889. Determine whether the sample data (n = 15) could have come from a population that is normally distributed Click the icon to view the normal probability plot. Click here to view the table of critical values of the correlation coefficient. OA. The normal probability plot indicates that the sample data could have come from a population that is normally distributed B. The normal probability plot does not indicate that the sample data could have come from a population that is normally distributed
QUEST A set of final examination grades in a calculus course was found to be normally distributed with a mean of 69 and a standard deviation of 9. The top 15% of the students taking the test scored will receive a grade of B. What is the cur score?
A population has a mean p= 79 and a standard deviation o = 12. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 36. %3D H=(Simplify your answer.) %3D (Simplify your answer)
Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results are given in the frequency distribution: Aptitude Score 0 1 2 3 4 5 Frequency 1 6 4 1 5 2 Calculate the sample standard deviation of this data. Answer using two decimal places.
please answer b and e
Please answer B, C, & D.
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SubPArt. Pls answer the rest

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