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Part 1 of 7 (a) Explain why it is necessary to check that the population is approximately normal before performing a hypothesis test. It is necessary to check that the population is approximately normal because the sample size is small 30 Part 2 of 7 (b) Following is a dotplot of the data. Is it reasonable to assume that the population is approximately normal? It is Part 3 of 7 6 Part 4 of 7 10 (c) State the appropriate null and alternate hypotheses. H 15 Hu=15 This hypothesis test is a two-tailed Part 5 of 7 ▾ reasonable to assume that the population is approximately normal. 18 test. D C=D X H (d) Compute the value of the test statistic. Round the answer to two decimal places. 2= 13 5 (e) Compute the P-value. Round the answer to four decimal places. P-value = 54

Part 1 of 7 (a) Explain why it is necessary to check that the population is approximately normal before performing a hypothesis test. It is necessary to check that the population is approximately normal because the sample size is small 30 Part 2 of 7 (b) Following is a dotplot of the data. Is it reasonable to assume that the population is approximately normal? It is Part 3 of 7 6 Part 4 of 7 10 (c) State the appropriate null and alternate hypotheses. H 15 Hu=15 This hypothesis test is a two-tailed Part 5 of 7 ▾ reasonable to assume that the population is approximately normal. 18 test. D C=D X H (d) Compute the value of the test statistic. Round the answer to two decimal places. 2= 13 5 (e) Compute the P-value. Round the answer to four decimal places. P-value = 54

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 4GP
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Part 1 of 7 (a) Explain why it is necessary to check that the population is approximately normal before performing a hypothesis test. It is necessary to check that the population is approximately normal because the sample size is small ≤30 X Part 2 of 7 It is (b) Following is a dotplot of the data. Is it reasonable to assume that the population is approximately normal? Part 3 of 7 Ś Part 4 of 7 (c) State the appropriate null and alternate hypotheses. H = 15 H = 15 This hypothesis test is a two-tailed ▾ reasonable to assume that the population is approximately normal. Part 5 of 7 . test. x D<0 >0 0-0 5 OD μ (d) Compute the value of the test statistic. Round the answer to two decimal places. z = 13 X (e) Compute the P-value. Round the answer to four decimal places. P-value = 54 $ X $ Expañol
Transcribed Image Text:Part 1 of 7 (a) Explain why it is necessary to check that the population is approximately normal before performing a hypothesis test. It is necessary to check that the population is approximately normal because the sample size is small ≤30 X Part 2 of 7 It is (b) Following is a dotplot of the data. Is it reasonable to assume that the population is approximately normal? Part 3 of 7 Ś Part 4 of 7 (c) State the appropriate null and alternate hypotheses. H = 15 H = 15 This hypothesis test is a two-tailed ▾ reasonable to assume that the population is approximately normal. Part 5 of 7 . test. x D<0 >0 0-0 5 OD μ (d) Compute the value of the test statistic. Round the answer to two decimal places. z = 13 X (e) Compute the P-value. Round the answer to four decimal places. P-value = 54 $ X $ Expañol
Part 6 of 7 (f) Determine whether to reject H. Use the a=0.10 level of significance. Do not reject the null hypothesis H Part: 6/7 Part 7 of 7 (g) State a conclusion. There is not enough evidence to conclude that the mean lead amount is less than 15 micrograms per liter. X
Transcribed Image Text:Part 6 of 7 (f) Determine whether to reject H. Use the a=0.10 level of significance. Do not reject the null hypothesis H Part: 6/7 Part 7 of 7 (g) State a conclusion. There is not enough evidence to conclude that the mean lead amount is less than 15 micrograms per liter. X
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