webassign.net 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 = 1.32 A, with a sample standard deviation of s = 0.43 A. Do the data indicate that the Toylot claim of 0.8 A is too low? (Use a 1% level of significance.) What are we testing in this problem? O single proportion O single mean (a) What is the level of significance? State the null and alternate hypotheses. O Ho: H # 0.8; H1: µµ = 0.8 Ο H0: μ = 0.8; H1: μ+ 0.8 O Ho: p = 0.8; H1: p > 0.8 O Ho: p + 0.8; H1: p = 0.8 O Ho: p = 0.8; H1: p + 0.8 O Ho: H = 0.8; H1: µ > 0.8 (b) What sampling distribution will you use? What assumptions are you making? O The Student's t, since we assume that x has a normal distribution with known o. O The standard normal, since we assume that x has a normal distribution with known ơ. O The Student's t, since we assume that x has a normal distribution with unknown o. O The standard normal, since we assume that x has a normal distribution with unknown o. What is the value of the sample test statistic? (Round your answer to three decimal places.) (c) Find (or estimate) the P-value. O P-value > 0.250 O 0.125 < P-value < 0.250 O 0.050 < P-value < 0.125 O 0.025 < P-value < 0.050 O 0.005 < P-value < 0.025 O P-value < 0.005 Sketch the sampling distribution and show the area corresponding to the P-

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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 = 1.32 A, with
a sample standard deviation of s = 0.43 A. Do the data indicate that the Toylot
claim of 0.8 A is too low? (Use a 1% level of significance.)
What are we testing in this problem?
O single proportion
O single mean
(a) What is the level of significance?
State the null and alternate hypotheses.
O Ho: H # 0.8; H1: µµ = 0.8
Ο H0: μ = 0.8; H1: μ+ 0.8
O Ho: p = 0.8; H1: p > 0.8
O Ho: p + 0.8; H1: p = 0.8
O Ho: p = 0.8; H1: p + 0.8
O Ho: H = 0.8; H1: µ > 0.8
(b) What sampling distribution will you use? What assumptions are you
making?
O The Student's t, since we assume that x has a normal distribution with
known o.
O The standard normal, since we assume that x has a normal distribution
with known ơ.
O The Student's t, since we assume that x has a normal distribution with
unknown o.
O The standard normal, since we assume that x has a normal distribution
with unknown o.
What is the value of the sample test statistic? (Round your answer to three
decimal places.)
(c) Find (or estimate) the P-value.
O P-value > 0.250
O 0.125 < P-value < 0.250
O 0.050 < P-value < 0.125
O 0.025 < P-value < 0.050
O 0.005 < P-value < 0.025
O P-value < 0.005
Sketch the sampling distribution and show the area corresponding to the P-
Transcribed Image Text:webassign.net 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 = 1.32 A, with a sample standard deviation of s = 0.43 A. Do the data indicate that the Toylot claim of 0.8 A is too low? (Use a 1% level of significance.) What are we testing in this problem? O single proportion O single mean (a) What is the level of significance? State the null and alternate hypotheses. O Ho: H # 0.8; H1: µµ = 0.8 Ο H0: μ = 0.8; H1: μ+ 0.8 O Ho: p = 0.8; H1: p > 0.8 O Ho: p + 0.8; H1: p = 0.8 O Ho: p = 0.8; H1: p + 0.8 O Ho: H = 0.8; H1: µ > 0.8 (b) What sampling distribution will you use? What assumptions are you making? O The Student's t, since we assume that x has a normal distribution with known o. O The standard normal, since we assume that x has a normal distribution with known ơ. O The Student's t, since we assume that x has a normal distribution with unknown o. O The standard normal, since we assume that x has a normal distribution with unknown o. What is the value of the sample test statistic? (Round your answer to three decimal places.) (c) Find (or estimate) the P-value. O P-value > 0.250 O 0.125 < P-value < 0.250 O 0.050 < P-value < 0.125 O 0.025 < P-value < 0.050 O 0.005 < P-value < 0.025 O P-value < 0.005 Sketch the sampling distribution and show the area corresponding to the P-
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