Question

Stihl Math 207, action 03, 2000W Assignment Submission & scoring 0 Instructions Assignment Submission You will have 2 chances for each question For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. Assignment Scoring Your last submission is used for your score. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER DETAILS 1. (-/10.71 Points) BBUNDERSTAT12 8.3.009.5. Is the national crime rate really going down? Some sociologists say yes! They say that the reason for the decline in crime rates in the 1960s and 1990s is demographics. It seems that the population is aging, and older people commit fewer crimes. According to the rol and the Justice Department, 70% of all arrests are of males aged 15 to 34 yearst. Suppose you are a sociologist in Rock Springs, Wyoming, and a random sample of policies showed that of arrests last month, 22 were of males aged 15 to 34 years. Usea level of significance to test the claim that the population proportion of such arrests in Rock Springs is different from 70% USE SALT (a) What is the level of significance State the null and alternate hypotheses Hol 0.7 0.7 Hol 0.7 M D = 0.7 Hop 0.7 0.7 ID 0.7 M D +0.7 HP 0.7 0.7

Answer 1

Solution :- a) 0.05 level significance D Ho: p=0. Ha: p &0.7 If needed. Test stahistic (2) Ñ - Þ 22 36 0.7 pu-b) 0.7 70.3 36 Z - -1.16 P-value = //2c-1-1600 20 1.16) 1 0.2460 P-value Failed to reject Ho (Null bybodhesis)