By taking a sample of 100 randomly selected Nobel Prize winners we found that 20 out of 100 Nobel Prize winners in the sample were women. We want to check theclaim: "The share of Nobel Prize winners that are women is not 50%". Assume a-5%. What graph would you choose to test this hypothesis? (Hint: use a two-tailedtest)O a.Do Not Reject Ho0AADo Not Reject HoO b.Reject Hoα/2www-Z-criticalReject Hoα/2-t-critical0Reject Hoa/2Z-criticalt-statisticZ-statisticReject Hoa/2WwwZ-critical O C.O d.Reject Hoα/2-t-criticalt-statisticReject Hoα/2www-Z-criticalZ-statisticDo Not Reject Ho0Do Not Reject Ho0Reject Hoα/2wwwt-criticalReject Hoa/2MZ-critical

sample size(n)=100 x=20 significance level(α)=5%=0.05 sample proportion(p^)=xn=20100=0.20 Claim is…

Answered: By taking a sample of 100 randomly…

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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24. When the connected points on a scatterplot make a perfect y=x line, what is its (correlation) r-value? Group of answer choices r = -1 r = 0 r = 1 r = 0.5
A group claims that the police issue more than 54% of their tickets in school zones. To prove their point, they randomly select one week and find a total of 156 tickets were written and 91 were in school zones. Test the hypothesis at a .03 level. 1. The graph is (give one answer: L - Left tailed, R - Right tailed, 2 - Two-Tailed) 2. Critical Value (start with negative and separate with a comma if there are 2) 3. Test statistic 4. 3-decimal p-Value
Q1. An anthropologist wants to collect data to determine whether the two different cultural groups that occupy an isolated Pacific Island grow to be different heights. The results of his samples of the heights of adult females are as follows Group A n = 120 X1= 62.7 Group B n = 150 X2 = 61.8 S2 = 2.62 S1=2.5 Do these samples constitute enough evidence to reject the null hypothesis that the heights of the two groups are the same? Set alpha to .05. 5. What is the appropriate decision and conclusion? A. Reject Ho, so there is significance evidence to conclude heights of the two groups are different. B. Fail to eject Ho, so no significance evidence to conclude heights of the two groups are different. C. Fail to reject Ho, so there significance evidence to conclude: heights of the two groups are different D. Reject Ho, so no significance evidence to conclude heights of the two groups are different.
Z.5 points A dependent t-test study and an independent t-test study both produced a t statistic with df = 10. How many individuals participated in each study? 12 for dependent and 12 for independent 12 for the dependent and 11 for independent 11 for dependent and 11 for independent 11 for dependent and 12 for independent
Stoaches are fictional creatures, sometimes mistaken for mome raths. Suppose a two-tailed t-test is conducted to test for a difference between the population means of adult female stoach weights and adult male stoach weights. The female sample has 13 weights, and the male sample has 7 weights. The t-statistic for the test is -0.20542. What is the p-value? (Give your answer to 4 decimal places.) p-value:
4. Suppose you are given the following information: = 49.6870 – 2.1586X; r2 = 0.9757 (0.7463) (0.12113) df=8 T= (66.578) (-17.821) p-value = (0.000) (0.000) a) Conduct a two tailed hypothesis test that: i) The intercept is 49 and the slope coefficient is -2, use 1% significance. ii) Confirm your deductions to 4(a) (i) using a confidence interval approach b) What does the r2 tell you? c) Perform a hypothesis using r2, such that p=D0, what do you conclude?
2
3.7.1 only
Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?
I have struggled with questions related to the one in the image attached. What makes these data distributions such as these symmetrical and non-symmetrical? I have had multiple various questions of this type and I cannot get any of them right when it seems VERY easy to figure out just by looking at the numbers alone. I even DRAW OUT the graphs to give a better visual but I assume I am just missing or over-thinking some simple concepts.
2
#3 with graph

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