### Question 1A medical research team created a special treatment program to reduce systolic blood pressure levels of patients. If the treatment program is effective, the average blood pressure level of these patients should be below 120. They are doing a statistical hypothesis test to check the effectiveness of their treatment program. What would be the null hypothesis of their hypothesis test for mean blood pressure? The population mean blood pressure is denoted by μ.### Options:- a. μ ≠ 120- b. μ > 120- c. μ = 120- d. μ < 120#### Answer Submission:Click "Save and Submit" to save and submit your answer. Click "Save All Answers" to save all answers.---[Explanation: In hypothesis testing, the null hypothesis (H₀) typically represents the status quo or a position of no difference or no effect. Here the null hypothesis would be that the special treatment program does not affect the patients' average systolic blood pressure, keeping it at 120. Hence, the correct null hypothesis would be denoted as μ = 120 (Option c).]

The hypothesized mean is μ0=120

Answered: QUESTION 1 1) A medical research team…

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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QUESTION 11 You hypothesize that drinking tea reduces stress levels so you design a study comparing stress levels between people who drink tea and people who do not drink tea. You collect data on 47 people and find that in your sample there are 21 people who do not drink tea a Ind 26 people who drink drink tea. The mean stress score for non-tea drinkers is 76 with a standard deviation of 25, while the mean score for those who drink tea is 62 with a standard deviation of 13. Above you have calculate the t-statistic and found the critical value of t. Based on this information, which of the follow statements is correct? O you accept the null hypothesis because your calculated t-statistic value is greater than the critical value of t O you reject the null hypothesis because your calculated t-statistic value is greater than the critical value of t O you accept the null hypothesis because your calculated t-statistic value is less than than the critical value of t O you accept the null…
QUESTION 10 Solve the problem. Find the standardized test statistic t for a sample with n = 12, x = 20.6, s = 2.1, and a = 0.01 if Ha: H 21.1. Round your answer to three decimal places. O a. -0.825 O b. -0.037 OC. -0.381 O d.-0.008
Question 8 Dr. Jameson wanted to know if IQ scores differed between male and female participants in his study. He gave 28 participants an IQ test and then compared IQ scores for gender differences. He hypothesized that there would be a statistically significant gender difference in IQ scores. Contrary to Dr. Jameson's hypothesis, there were no differences in IQ scores between men and women in his study. Based on the information provided, does this study meet the assumption of normality? Why or why not? We do not know whether it is normally distributed because we do not have information on the population. Yes; it is normally distributed because the sample size is large. No; it is not normally distributed because the small sample size is small. We do not know whether it is normally distributed and the sample size is not at least 30 participants.
Question 12?
Question #3 Samples of body temperatures were collected for a group of women and a group of men. The summary statistics are given below: Women:n1 = 15 sample mean = 98.38 ̊F s1 = 0.45 ̊F Men:n2= 91 sample mean= 98.17 ̊F s2 = 0.65 ̊F 1. Use a 0.01 significance level to test the claim that women and men have different mean body temperatures using the p value method. Show all the steps of your hypothesis test including the p value: initial conclusion: a final conclusion about the original claim:
Question 7: Weight loss: In a study to determine whether counseling could help people lose weight, a sample of people experienced a group-based behavioral intervention, which involved weekly meetings with a trained interventionist for a period of six months. The following data are the numbers of pounds lost for 14 people. Assume the population is approximately normal. Perform a hypothesis test to determine whether the mean weight loss is greater than 13 pounds. Use the a=0.05 level of significance and the P-value method with the TI-84 Plus calculator. 21.2 27.5 6.5 22.8 20 11.5 16.2 19.7 36.3 32.5 11.1 34.8 22.4 17.9 Part 1: (a) State the appropriate null and alternate hypotheses. H0: (BLANK) H1:(BLANK) This hypothesis test is a (BLANK) tests. Answer Choice: Left-Tailed Right-Tailed Two-Tailed Part 2: (b) Compute the value of the test statistic. Round the answer to at least three decimal places. t = (BLANK) Part 3: (c) Compute the P-value. Round the answer to at…
Question 7: give the test statistic

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