1) z crit , t crit , z stat , or t stat ; +,-, or ± ; and blue color box answer
ID: 3067050 • Letter: 1
Question
1) z crit , t crit , z stat , or t stat ; +,-, or ± ; and blue color box answer must be typed to either 2 or 3 deciamls depwnding on whether the z or t table appropiate.please use the tables uploaded 2) reject H0 or Fail to reject H0 3) Green color box answer must be typed to four decimals12 14A consultant for a large university studied the number of hours per week freshmen watch TV versus the number of hours 15 seniors do. The results of this study follow. Is there enough evidence to show the mean number of hours per week freshmen 6watch TV is different from the mean number of hours seniors do at a-0.005? 17 18 19 20 Seniers 184 7.8740 23 24 25 26 For the hypothesis stated above (in terms of Seniors-Freshmen .9749 27 28 Question 1 What is/are the critical valuel? Qeton2 What is the decision? Question 3 What is the p value? Fll in only ns of the following statements 30 32 14 f the 2 table is appropriate, pvalue f the t table is appropriate, p value Click to Grade Your Work
Explanation / Answer
1)
critical value = +/- 3.055
2)
reject H0 if t > 3.055 or t < -3.055
3) test statistic:
x1 = 18.4 , s1 =7.8740 , x2 = 11.4 , s2 = 3.9749 , n1 =8 ,n2 =6
t = ( x1 -x2) / sqrt(s1^2/n1 + s2^2/n2)
= ( 18.4 - 11.4) / sqrt*7.8740^2/8 + 3.9749^2/6)
= 2.1724
p value = 0.0505
0.01 < p value < 0.005
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