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 nd 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 hypothesis because your calculated t-statistic value is less than than the critical value of t

Q: A psychologist is studying the self image of smokers, as measured by the self-image (SI) score from…

A: Given Information: Mean SI score for population of all smokers, μ0 = 82 Standard deviation score for…

Q: Doug has 1,000 bottle caps in his collection compared to Melissa's 2000 bottle caps. If the average…

A: Given,mean(μ)=1250standard deviation(σ)=500Doug bottle cap collection(X)=1000Melissa's bottle cap…

Q: What is the z-score for this raw score?

A: Let ,  Our aim is to find the Z-score .

Q: Find a 95% confidence interval on the difference in mean force on the hands for the two activities.…

A: The 95% confidence interval on the difference of means is calculated as below: The value of z* is…

Q: Two classes took a statistics test. Both classes had a mean score of 73. The scores of class A had a…

A: Given: Two classes took a test. Mean score of both classes is 73. Standard deviation of A and B is 5…

Q: You are interested in seeing whether emotions impact decision making. You have three groups--a happy…

A: The objective of the question is to calculate the mean square between samples, which is a measure of…

Q: ASK YOUR TEACHER   Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous…

A:

Q: Russell is doing some research before buying his first house. He is looking at two different areas…

A: X1-bar=176400 X1-bar=181500 Standard deviations 1=32930 Standard deviations 2=23835 n1=39 n2=32

Q: You are interested in seeing whether emotions impact decision making. You have three groups--a happy…

A: The objective of this question is to determine whether the difference in risky decision making…

Q: What if a professor returned an assignment to you and your assignment had a standard deviation score…

A: We have to find raw score for given data

Q: Since she scored standard deviations v the mean in economics and standard deviations V the mean in…

A: