2. (5 points) Which of the following is a discrete random variable? 1. The avera

Question

2. (5 points) Which of the following is a discrete random variable? 1. The average weight of students in Math 2200. 2. The number of students that score 100% on Exam 1. 3. The time I have to wait for the next bus home. (a) I only (b) II only (c) I and II only (d) I and III only (e) I, II, and III 3. (10 points) Which of the following statements is false about the Central Limit Theorem for 7? (a) The sample size n has to be greater than or equal to 30 for g to be approximately normal if the distribution of y is left skewed. When the population distribution is normal, the sampling distribution of g is exactly (b) (c) The mean for g, under the Central Limit Theorem is equal to the population mear (d) The standard deviation of g, under the Central Limit Theorem is equal to the 4. (10 points) Assume that the research hypothesis is Ha :

Explanation / Answer

2) Only 2nd is a discrete random vairable.

3) B - The sampling distribution is only approximately normal and not exactly normal

4) Critical value is 1.96 and we would reject the null hypothesis since 2>1.96

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