10.1

12. The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested . Ho: H = 120 H1: H O less than greater than O O greater than O equal to (8) O rejects (9) O equal to (10) O equal to O fails to reject O less than O less than O greater than different from O different from O greater than 15. Three years ago, the mean price of an existing single-family home was $243,715. A real estate broker believes that existing home prices in her neighborhood are higher. (a) State the null and alternative hypotheses in words. b) State the null and alternative hypotheses symbolically. c) Explain what it would mean to make a Type | error. d) Explain what it would mean to make a Type II error. (a) State the null hypothesis in words. Choose the correct answer below. O A. The mean price of a single family home in the broker's neighborhood is $243,715. O B. The mean price of a single family home in the broker's neighborhood is different from $243,715. O C. The mean price of a single family home in any neighborhood is $243,715. O D. The mean price of a single family home in the broker's neighborhood is greater than $243,715