Can you answer whats blank?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Can you answer whats blank?
Transcribed Image Text:The Toylot company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere (A) under a normal load. A sample of nine motors was tested, and it was found that the mean current was x- 1.26 A, with a sample standard deviation of s - 0.44 A. Do the data indicate that the Toylot daim of 0.8 A is too low? (Use a 1% level of significance.)
What are we testing in this problem?
O single propartion
O single mean
(a) What is the level of significance?
State the null and alternate hypotheses.
O H.: p- 0.8; H,: p+ 0.8
O Hại 0.8; H: - 0.8
O H:: p+ 0.8; H1:p - 0.8
O Hg: - 0.B; Hi 0.8
O Hg: p- 0.8; H: p> 0.8
O H.: - 0.8; H: > 0.8
(b) What sampling distribution will you use? What assumptions are you making?
O The standard normal, since we assume that x has a nomal distribution with unknown o.
O The Student's t, since we assume that x has a normal distribution with unknown e.
O The Student's t. since we assume that x has a nomal distribution with known a.
O The standard normal, since we assume that x has a nomal distribution with known s.
What is the value of the sample test statistic? (Round your answer to three decimal places.)
O
(c) Find (or estimate) the Pvalue.
O P-value > 0.250
O 0.125 < Pvalue < 0.250
O 0.050 < Pvalue < 0.125
O 0.025 < Pvalue < 0.050
O 0.005 < Pvalue < 0.025
O Pvalue < 0.005
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