KIQ scores are normally distributed with a mean of 95 and a standard deviation of 18. Assume that many samples of size nare taken from a large population of people and the mean IQ score is computed for each sample.184Ra. If the sample size is n = 36, find the mean and standard deviation of the distribution of sample means.The mean of the distribution of sample means is 95000000F4The standard deviation of the distribution of sample means is 3(Type an integer or decimal rounded to the nearest tenth as needed.)b. If the sample size is n = 121, find the mean and standard deviation of the distribution of sample means.The mean of the distribution of sample means is 95The standard deviation of the distribution of sample means is(Type an integer or decimal rounded to the nearest tenth as needed.)OCTO 15%5TF5N6TIPF6HMacBook AirY♫&7Ⓒ◄◄F7U√√ L. () Moretv* 08SDIIF8.9I9AF9ZAOF10BP-&F11W

Answered: go and a standard de K IQ scores are…

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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Approximate the population mean and standard deviation of age for males. By the way, we are finding the midpoints by adding vertically by the first numbers before the hypens in the age column, and then dividing by 2 (ex: 0+10/2=5, 10+20/2=15, 20+30/2=25)
The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30. Find the score that is 2 1/2 standard deviations above the mean.
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.
Sam and Peter are classmates. In an examination, Sam gets 75 marks and Peter gets 89 marks. It is known that the standard normal score of Sam's marks is 0, z(Sam) = 0 and the standard normal score of Peter's marks is 1.75, z(Peter) = 1.75. Find the standard deviation of the examination marks.
a standardize exam scores are normally distributed,in a recent year,the mean test scores was 1490,standard deviation was 320,the test sscores four for studentselected at a random are;1940,1249,and 1380.Find the Zscores that correspond to each vale and determine whether any of the values are unusual
to qualify for a police academy, applicants are given a test of physical fitness. The scores are normally distributed with a mean of 66 and a standard deviation of 10 . If only the top 13% of the applicants are selected, find the cutoff score. Round z-value calculations to 2 decimal places and the final answer up to the nearest whole number. Cutoff score
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1466 and the standard deviation was 315. The test scores of four students selected at random are 1890, 1210, 2200, and 1340. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The Z-score for 1890 is. (Round to two decimal places as needed.).
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1544 and the standard deviation was 314.The test scores of four students selected at random are 1940, 1290, 2250,and 1420.Find the z-scores that correspond to each value and determine whether any of the values are unusual. (Round to 2 decimal places as needed.)
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.
The scores from the first exam of a pre-calculus class determined a mean of 73.5 and a standard deviation of 17.9. 1. Calculate an exam score that is 2 standard deviations below the mean. 2. Calculate an exam score that is 1 standard deviation above the mean.
The mean performance score of a large group of fifth-grade students on a math achievement test is 76. The scores are known to be normally distributed. What percentage of the students had scores more than 2.1 standard deviations above the mean? Click here for page 1 of the Areas under the Normal Curve Table Click here for page 2 of the Areas under the Normal Curve Table The percentage of the students that had scores more than 2.1 standard deviations above the mean is%. (Round to two decimal places as needed.)
Assume that we have made 10 repeated measurements of a quantity, and as a result the error assigned to the “best estimate” of the mean is 6. If we then expand our data set to a total of 20 measurements, the error in the mean will reduce to just 3. True or False

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