Source Sum Degrees Mean p-value of variation of squares of freedom square Treatments 148.5 Error 12 Total 415 (A). Compute the mean square due to error. (a) 17.7333 (b) 16.4167 (c) 69 (d) 266.5 (e) None of the above (B). What is the F test statistics value? (a) 0.2991 (b) 52 (c) 2.1667 (d) 3.3433 (e) None of the above (C). Using F table, what is the most possible range of values of the p-value? (a) 0.025

A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was at least 11 years. A survey of 62 companies reported in The Wall Street Journal found a sample mean tenure of 9.3 years for CEOS with a standard deviation of s = 4.4 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by the group, at a significance level of a = 0.05. Your hypotheses are: H.:µ > 11 На: :и < 11 What is the test statistic for this sample?

Given the following boxplot, identify the first quartile. 33.5 43.5 45.0 28.5 25 30 35 40 40 45

A dietitian wishes to see if a person's cholesterol level will change if the diet is supplemented by a certain mineral. Seven subjects were pretested and then took the mineral supplement for a six-week period. The results are shown below in the table. Use a paired samples t-chart at a = 0.01 significance level to see difference (Before - After) between the cholesterol levels. State the hypotheses and conclusion. Also, conduct a 99% confidence interval. Subject 1 Before 210 After 190 2 205 170 3 208 210 4 192 188 5 178 173 6 244 228 7 211 198