QUESTION 2You are a research assistant at a zoo. The question of your study is "Has the proportion of baby zebras born in zoos increased from10%?". Your supervisor asks that you run a hypothesis test using an significance level of 0.05. Form the study you obtain a z-score of1.89. Do you reject the null hypothesis and why?Yes, you reject the null hypothesis. The obtained z-score is in the area of rejection.No, you retain the null hypothesis. The obtained z-score is not in the area of rejection.Yes, you reject the null hypothesis. The obtained z-score is not in the area of rejection.No, you retain the null hypothesis. The obtained z-score is in the area of rejection.

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Answered: QUESTION 2 You are a research assistant…

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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Looking at youth depression scores from a general sample of random children in the US, we want to determine if our sample is significantly different than the national average of scores of children with depression in the US. The national average of scores on a measure of depression is 5 points. We have no reason to assume it will be higher or lower than the US national average. The sample: 11 9 12 3 3 4 13 1. What is the null and alternative hypotheses? Do not specify any directionality. 2. What did you discover (using 95% Cl)? Provide an interpretation.
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You are conducting a study to see if the probability of catching the flu this year is significantly less than 0.22. You use a significance level of a = 0.01. Ho: p = 0.22 H₁ p < 0.22 You obtain a sample of size n= 746 in which there are 131 successes. What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This p-value leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the probability of catching the flu this year is less than 0.22. O There is not sufficient evidence to warrant rejection of the claim that the probability of catching the flu this year is less than 0.22. O The sample data support the claim that the probability of catching the flu this year is less than 0.22. O There is not sufficient sample evidence to support the claim that…

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