Question

problem #1

and 35 models of Make B. The mean braking distance for Make A is 43 feet. Assume the population standard deviation is 4.8 feet. The mean braking distance for Make Bis 45 foet. Assume the population standard deviation is 4,5 feet. Ato -0.10, can the engineer support the claim that the mean braking distances are different for the two makes of automobiles? Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table Click here to view page 2 of the standard normal distribution table (a) Identify tho claim and state Ho and H, What is the claim? O A. The mean braking distance is the same for the two makes of automobiles. OB. The mean braking distance is different for the two makes of automobiles. OC. The mean braking distance is less for Make A automobiles than Make B automobiles. OD. The mean braking distance is greater for Make A automobiles than Make B automobiles. What are Ho and H,? O A HO H12 B. HOP SH2 loc. Ho Ri 212 H52 OD. How2 Oе на: 1 2 OF H2 H2 H2 (b) Find the critical valuo(s) and identify the rejection regions). The critical value(s) is/are (Round to three decimal places as needed. Use a comma to separate answers as needed.) What is/are the rejection region(s)? O A. 2-2.81 OB. 25 -1.645, z>1.645 OC. 2-2.58, 22.58 D. z>2.575 OE. 2-2.575, 2 > 2.575 OF. 2-2.58 OG24 - 1.96, z► 1.96 OHZ-2.81,2-2,81 (c) Find the standardized test statistic z for 2- (Round to three decimal places as needed.) (a) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. O A. Falto reject Ho. The standardized test statistic falls in the rejection region. B. Fail to reject Ho. The standardized test statistic does not fall in the rejection region, OC. Reject Ho. The standardized test statistic does not fall in the rejection region. OD. Rejedt Ho. The standardized test statistic falls in the rejection region. (e) Interpret the decision in the context of the original claim. At the significance level, there is evidence to the claim that the mean braking distance for Make A automobiles is one for Make B automobiles

problem #2

Answer 1

follow the following steps to conduct the hypothesis