Question 5 (1 point) A researcher is examining whether daily exercise influences mood. The researcher assigns n = 10 individuals to exercise for three months and finds an average mood score of M = 15 with 55 = 182 after three months for individuals in this group. A second group of n = 8 individuals assigned to a control group for the three months has a mood score of M = 35 with $5 = 90. Which of the following is most consistent with the results of conducting a two-tailed independent-measures t test with or = .05? O t = +9.20 and reject the null hypothesis 0 t = +1023 and fail to reject the null hypothesis 0 t = +9.20 and fail to reject the null hypothesis O t = +1023 and reject the null hypothesis To evaluate the effect of a treatment, a sample is obtained from a normal population with the hypothesized mean of u = 35, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M = 30 with estimated standard error sM = 1.5. If the sample consists of n = 9 individuals, what is the t-statistic? Choose the closest answer. In a sample of size n = 14, mean M = 80, and estimated standard error 5 M = 7.00, the upper limit of the 95% confidence interval is 105.31. What is the lower limit? Choose the closest