True or False. (25 pts) (b) ( AND ) 1, where is the complement of . Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Refer to the following information for Questions 6, 7, and 8. How many outcomes are there in the sample space? (5 pts) first roll is an even number? (10 pts) Refer to the following situation for Questions 9, 10, and 11. (5 pts each) Refer to the following information for Questions 12 and 13. . Imagine you are in a game show. There are 6 prizes hidden on a game board with 10 spaces. One prize is worth $100, another is worth $20, and four are worth $5.You have to pay $20 to the host if your choice is not correct. Let the random variable x be the winning. Mimi just started her tennis class three weeks ago. On average, she is a
ble to return 30% of her opponent’s serves. Assume her opponent serves 10 times. Refer to the following information for Questions 17, 18, and 19. The heights of pecan trees are normally distributed with a mean of 10 feet and a standard deviation of 2 feet. Find the 3 quartile of the pecan tree height distribution. (5 pts) A random sample of 225 SAT scores has a sample mean of 1500. Assume that SAT scores have a population standard deviation of 300. Construct a 95% confidence interval estimate of the mean SAT scores. (c) Is there sufficient evidence to justify the rejection of at the 0.01 level?Explain. (15 pts) Assume we want to use a 0.10 significance level to test the claim. A STAT 230 instructor is interested in whether there is any variation in the final exam grades between her two classes Data collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: