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In one month, the national mean price per i gallon (in dollars) of gasoline was 3.105. The data table here represents a random sample of 20 gas stations in city A. Is gas in city A more expensive than the nation? Assume the data come from a normal population with no outliers. Complete parts (a) through (d) below. 3.01 3.12 3.15 3.22 3.23 3.11 3.08 3.09 3.11 3.14 3.17 3.17 3.18 3.23 3.24 3.21 3.22 3.25 Ho H₁3 (Type integers or decimals.) (c) Use technology to calculate the P-value. (Round to three decimal places as needed.) 3.17 3.21 0 (a) What type of test should be used? A hypothesis test regarding the difference between two population proportions from independent samples using the standard normal test statistic A hypothesis test regarding two population standard deviations A hypothesis test regarding a single population mean using Student's approximate t A hypothesis test regarding the difference of two means using a matched-pairs design (b) Determine the null and alternative hypotheses. CHE

In one month, the national mean price per i gallon (in dollars) of gasoline was 3.105. The data table here represents a random sample of 20 gas stations in city A. Is gas in city A more expensive than the nation? Assume the data come from a normal population with no outliers. Complete parts (a) through (d) below. 3.01 3.12 3.15 3.22 3.23 3.11 3.08 3.09 3.11 3.14 3.17 3.17 3.18 3.23 3.24 3.21 3.22 3.25 Ho H₁3 (Type integers or decimals.) (c) Use technology to calculate the P-value. (Round to three decimal places as needed.) 3.17 3.21 0 (a) What type of test should be used? A hypothesis test regarding the difference between two population proportions from independent samples using the standard normal test statistic A hypothesis test regarding two population standard deviations A hypothesis test regarding a single population mean using Student's approximate t A hypothesis test regarding the difference of two means using a matched-pairs design (b) Determine the null and alternative hypotheses. CHE

MATLAB: An Introduction with Applications
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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In one month, the national mean price per gallon (in dollars) of gasoline was 3.105. The data table here represents a random sample of 20 gas stations in city A. Is gas in city A more expensive than the nation? Assume the data come from a normal population with no outliers. Complete parts (a) through (d) below. 3.11 3.11 3.15 3.17 3.22 3.21 3.23 3.21 3.01 3.12 3.08 3.09 3.14 3.17 3.17 3.18 3.23 3.24 3.22 3.25 (a) What type of test should be used? A hypothesis test regarding the difference between two population proportions from independent samples using the standard normal test statistic O A hypothesis test regarding two population standard deviations A hypothesis test regarding a single population mean using Student's approximate t A hypothesis test regarding the difference of two means using a matched-pairs design (b) Determine the null and alternative hypotheses. Ho H₂: (Type integers or decimals.) (c) Use technology to calculate the P-value. (Round to three decimal places as needed.)
Transcribed Image Text:In one month, the national mean price per gallon (in dollars) of gasoline was 3.105. The data table here represents a random sample of 20 gas stations in city A. Is gas in city A more expensive than the nation? Assume the data come from a normal population with no outliers. Complete parts (a) through (d) below. 3.11 3.11 3.15 3.17 3.22 3.21 3.23 3.21 3.01 3.12 3.08 3.09 3.14 3.17 3.17 3.18 3.23 3.24 3.22 3.25 (a) What type of test should be used? A hypothesis test regarding the difference between two population proportions from independent samples using the standard normal test statistic O A hypothesis test regarding two population standard deviations A hypothesis test regarding a single population mean using Student's approximate t A hypothesis test regarding the difference of two means using a matched-pairs design (b) Determine the null and alternative hypotheses. Ho H₂: (Type integers or decimals.) (c) Use technology to calculate the P-value. (Round to three decimal places as needed.)
(d) Draw a conclusion based on the hypothesis test. Choose the correct answer below OA. Although no level of significance is stated, the P-value is so small that the null hypothesis can be rejected. There is sufficient evidence to conclude that the gas prices in city A are lower than the national average. OB. Although no level of significance is stated, the P-value is so small that the null hypothesis can be rejected. There is sufficient evidence to conclude that the gas prices in city A are higher than the national average OC. No meaningful conclusion can be drawn because no level of significance was stated OD. Although no level of significance is stated, the P-value is large enough that the null hypothesis cannot be rejected. There is insufficient evidence to conclude that the gas prices in city A are higher than the national average
Transcribed Image Text:(d) Draw a conclusion based on the hypothesis test. Choose the correct answer below OA. Although no level of significance is stated, the P-value is so small that the null hypothesis can be rejected. There is sufficient evidence to conclude that the gas prices in city A are lower than the national average. OB. Although no level of significance is stated, the P-value is so small that the null hypothesis can be rejected. There is sufficient evidence to conclude that the gas prices in city A are higher than the national average OC. No meaningful conclusion can be drawn because no level of significance was stated OD. Although no level of significance is stated, the P-value is large enough that the null hypothesis cannot be rejected. There is insufficient evidence to conclude that the gas prices in city A are higher than the national average
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