1. What is the t-value of the distribution with a = 1% and n = 18 under the one-tailed test. 2. What is the area under the t-distribution from t = -1.771 to t = 2.160 at df = 13? 3. A study is conducted to compare the performance of students with more than one personal electronic gadget and those with only one . A number of them were taken as subjects for the study. The mean grades of these students and their standard deviation are given: Students Mean Standard deviation Sample size With one gadget X1 = 83 S1 = 12 n =7 With more than *1 = 79 S = 13 n1 = 5 one gadget Is it possible to conclude that there is no significant difference in the mean grades of the two types of students at a 95% confidence level? (show solution for interval) www.toplintoa PowerPoir Slide Show - 1 - PowerPoint Solve for the following: 1. A nutritionist is interested in monitoring the calorie intake of women. It was found that in a selected random sample of 50 female adults, the average daily intake of meat products is 2,200 calories per day with a standard deviation of 300 calories. Construct a 99% confidence interval for the mean intake of calories from meat products of female adults. 2. Construct a 90%, 95%, and 99% confidence interval of the mean weightof fresh oranges if 100 randomly selected fresh oranges have a mean weight of 180 grams and a standard deviation of 30g. Slide 23 of??? _ meetgooglecom is sharing a window. Slap sharing Hldo _ \"l P |"| . ' ' E 10 Type here to search