CHOOSE AN ANSWER WHEN CHOICES ARE GIVEN. OTHERWISE, SHOW ALL YOUR WORK AND GIVE
ID: 3314310 • Letter: C
Question
CHOOSE AN ANSWER WHEN CHOICES ARE GIVEN. OTHERWISE, SHOW ALL YOUR WORK AND GIVE A FINAL ANSWER. YOU DONTEARN CREDITS IF WORK IS NOT SHOWN. Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. 7) The owner of a football team claims that the average attendance at games is over 694, and he is 7) therefore justified in moving the team to a city with a larger stadium. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms A) There is sufficient evidence to support the claim that the mean attendance is less than 694 B) There is sufficient evidence to support the claim that the mean attendance is greater than than 694. C) There is not sufficient evidence to support the claim that the mean attendance is greater than 694 D) There is not sufficient evidence to support the claim that the mean attendance is less than 694 Find the value of the test statistic z using z 8) The claim is that the proportion of drowning deaths of children attributable to beaches is more than 8) 025, and the sample statistics include n-681 drowning deaths of children with 30% of them attributable to beaches. A) 3.01 B)-3.01 C) 2.85 D) -2.85 Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis 9) a-0.05 for a left-tailed test. 9) A)±1.645 B)-1.96 C)-1.645 D) +1.96 10) a 0.1 for a two-tailed test. A) ±1.4805 10) B) 12.33 C) 2.052 D) ±1.645 Express the mull hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (pa, p, a) for the indicated parameter 11) A researcher daims that 62% of voters favor gun control. A) Hop#062 H1:p 0.62 B) Ho: p-062 Hip#062 Hi P 062 H1: p s0.62 12) Carter Motor or Company claims that its new sedan, the Libra, will average beter than 26 miles c gallon in the city. Use u, the true average mileage of the Libra per 12 D)Ho: > 26 111: 26Explanation / Answer
7)Conclusion is,failure to reject the null hypothesis H1:attendance<694,so H0:attendance>=694,so,failure means there is not sufficient evidence that H0 is false,means there is not sufficient evidence that average attendence is less than 694,hence last option is true(D)
8)Here proposed value of p is 0.25,so,q=0.75,n=681,pq/n=0.25*0.75/684=0.000275,p_hat=0.3(30% is equivalent to 0.3),so=z=(p_hat-p)/sqrt(0.000275)=-3.01 so (B) is correct
9)for a normal population with alpha=0.05, the lower 5% point of a standard normal distribution is=-1.645,being a left tailed test,5% of the observations lies below the point.Hence,(C) is correct.
10)alph=0.1,so for two tailed test we assume 0.05 on both side,such that the lower point is -1.645 and upper point is 1.645(5% of the population values are greater than 1.645)
so the answer is +- 1.645(D)
11)H0:p=0.62 vs H1:p not equal to 0.62(B)
12)H0:average is better than 26,ie >26,(H0:mu>26), H1:mu<=26,option (D) is correct.