1). Which of the following tests should be performed to determine whether the me
ID: 3367923 • Letter: 1
Question
1). Which of the following tests should be performed to determine whether the means of two populations are equal? C a Attest b. An analysis of variance c. A chi-square test d. Either a t test or an analysis of variance c 2). A study is conducted to determine whether there is a difference in the average number of employees who use their company's exercise facility at least three times a week. How many companies were studied based on the output below? Analysis of Variance Source of Variatiorn Group Error Total Sum of Deqrees of Mean Squares Freedom Square p-value 1679.7 1672.1 3351.8 36 39 559.9 46.4 12.05 000 c C O O a. The number of companies studied was 40 b. The number of companies studied was 36 c. The number of companies studied was 3 d. The number of companies studied was 4 Random samples of 25 homeowners in each of three major cities were taken. The sample mean purchase price of the homes in the three cities is given below. $134,000, X2 $130,000, X3 $139,000 Which of the following is the best estimate for the overall sample mean for an analysis of 3). variance? C a $130,000 b. $134,333 c. $403,000 d. $16,120 C CExplanation / Answer
a) A t test. Option A is Correct
b) No of Companies studied here is 39+1 = 40
3) Best Estimate for sample mea = (134000+130000+139000)/3 = 134,333
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