subject
Mathematics, 01.08.2020 04:01 kaylaaguilar6538

A1A Tires claims that its tires last longer than tires manufactured by its main competitor, YYZ Tires. A consumer group studied the lifespans of tires manufactured by each manufacturer. The lifespans of a random sample of 10 tires from each manufacturer, in thousands of miles, are recorded. Assume that the population standard deviation of the lifespan for tires manufactured by A1A Tires is 3 thousand miles, while the population standard deviation of the lifespan for tires manufactured by YYZ Tires is 5 thousand miles, and assume that the lifespans of both companies' tires are normally distributed. Let A1A Tires be the first sample, and let YYZ Tires be the second sample. The consumer group conducts a two-mean hypothesis test at the 0.05 level of significance, to test if there is evidence that A1A Tires' claim is true. (a) H0:μ1=μ2; Ha:μ1>μ2, which is a right-tailed test. (b) z≈3.09 , p-value is approximately 0.001 (c) Which of the following are appropriate conclusions for this hypothesis test? Select all that apply. Select all that apply: Reject H0. There is sufficient evidence at the 0.05 level of significance to conclude that the tires manufactured by A1A Tires do in fact last longer than those manufactured by YYZ Tires. Fail to reject H0. There is insufficient evidence at the 0.05 level of significance to conclude that the tires manufactured by A1A Tires do in fact last longer than those manufactured by YYZ Tires.

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 14:30, Yungnaudie
Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0
Answers: 2
image
Mathematics, 21.06.2019 15:30, sweetgigi5950
Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?
Answers: 3
image
Mathematics, 21.06.2019 18:30, kaitie60
Which statement describes surface features called maria on the moon
Answers: 3
image
Mathematics, 21.06.2019 19:00, mimi5937
What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box
Answers: 2
You know the right answer?
A1A Tires claims that its tires last longer than tires manufactured by its main competitor, YYZ Tire...

Questions in other subjects:

Konu
Biology, 29.06.2019 17:00
Konu
Mathematics, 29.06.2019 17:00