please answer a as soon as possible The following data represent the social ambivalence scores for 15 people as measured by apsychological test. (The higher the score, the stronger the ambivalence.)9.1312141511104108.191311179.a) Calculate the mean and the Standard deviation. What fraction of the scores actually lie in theinterval u±2s?b) Construct a box plot for the data and use it to describe the data distribution. Are there anyoutliers?

Answered: Image /qna-images/answer/a67b6e8c-9b8c-495f-9434-c81e96da9050.jpg

Answered: The following data represent the social…

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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Find the z value to the right o the mean so that 54.78% of the area under the distribution curve lies to the left of it.
A car manufacturer states that a new make and model of its cars has a mean gas mileage of at least 35 miles per gallon. A consumer group has gathered a sample of the gas mileage for 55 observations and found that the sample mean of gas mileage is 34.What is the p-value for the hypotheses H0:μ≥35,Ha:μ<35 if the standard error is 0.6? (If necessary, round your answers to four decimal places.)
Assume that the helium porosity (in percentage) of coal sample taken from any particular sean is normally distributed with a true standard deviation of 0.77 how large a sample size is necessary if the width of the 95% internal is to by 0.348 A) 75 B) 76 C) 80 D) 79
For a variable x that is noramally distributed with a mean of μ = 50 and a standard deviation σ = 5, find X1 such that P(X > X1) = .33 round X1 to the nearest tenth
For a population with a mean of u=45, a score of X=54 corresponds to z=1.50. What is the population standard deviation?
The brain volumes (cm^3) of 50 brains vary from a low of 956cm^3 to a high of 1484 cm^3. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 148.9cm^3, assuming the estimate is accurate if it is within 15 cm^3. What is the standard deviation?
For a sample with a standard deviation of s = 8, a score of X = 42 corresponds to z = –0.25 what is the mean
A random sample of 75 eighth grade students scores on a national mathematics assessment test has a score o 272. This test result prompts a state school administrator to declare that the mean score for the state’s eighth graders of this exam is more than 270. Assume that the population standard deviation is 30, At a = 0.03, is there enough evidence to support the administrator’s claim? Compare parts (a) through (e).
Find the indicated area under the standard normal curve. To the left of z= -1.53 and to the righg of z=1.53
xample: From the following data, find the following:1- Find the equation with the explanation2- Test the calculated FC if you know that the tabular Ft is 5.273- Arrange the ANOVA table X2 X1 Y X2 X1 Y 80 67 70 69 89 72 67 87 79 67 92 76 88 67 56 80 67 70 79 98 67 72 90 80 88 69 56 92 71 59 79 79 66 73 101 71 88 66 55 82 72 61 78 77 66 92 83 69 78 66 65 81 87 62 70 77 70 89 84 69 795 753 650 797 836 689
Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five. x P(x) 0 0.174 1 0.357 2 0.298 3 0.139 4 0.029 5 0.003
For a simple random sample of pulse rates of women (measured in beats per minute), n=144 and s=13.9. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.01 significance level to test the claim that pulse rates of women have a standard deviation equal to 10 beats per minute; see the accompanying JMP display that results from using the original list of pulse rates instead of the summary statistics. (Hint: The bottom three rows of the display provide P-values for a two-tailed test, a left-tailed test, and a right-tailed test, respectively.) What do the results indicate about the effectiveness of using the range rule of thumb with the "normal range" from 60 to 100 beats per minute for estimating σ in this case? Assume that the simple random sample is selected from a normally distributed…

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