Question

23-30 9463 Total 27,079 What is the probability that a student is between 23 and 30 years old A) 0.415 C) 0.35 B) 0.585 235 16) A recent study of business travelers claims they spend an average of $41.00 per day on meals. As a test of this claim, a random sampling of 16 business travelers found they had spent an average of $45.00 per day with a standard deviation of $3.65. What are the critical values for a two-tailed test of this claim with α = 0.05? A) ±1.753 B) ±1.746 C) +2.131 D) ±2.120 17) A sample of 65 chewable vitamin tablets have a sample mean of 295 milligrams of vitamin C. Nutritionists want to perform a hypothesis test to determine how strong the evidence is that the mean mass of vitamin C per tablet exceeds 294 milligrams. State the appropriate null and alternate hypotheses. A) H0',-294, Hi, μ+194 C) HGH> 295,HEP=295 D) Hey μ<295,HVp>295 18) A group of college students believes the average grades in psychology course different than the average grades in biolo psychology grades of a sample of 10 students was 84.4 and the average biology grade of a sample of 11 students was 79.2. What is the null hypothesis for this study? A) Ho: "psychology +/hiology-163.6 B) M-Apsychology-biology c) M:Apsychology = 84.4 and M):Abiology-79.2 D) :M 84.4 and 79.2 gy courses. The group found the average
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Answer 1

do to-1,"4 :1t2:13 l } , option (c) Ho: 294