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A major car dealership has several stores in a big city. The owner wants to determine if there is a difference in the proportion of SUVS that are sold at stores A and B. The owner gathers the sales records for each store from the past year. A random sample of 55 receipts from store A shows that 30 of the sales were for SUVS. Another random sample of 60 receipts from store B shows that 42 of the sales were for SUVS. Assuming conditions for inference are met, what is the 999% confidence interval for the difference in proportions of sales that are SUVS? Find the z-table here. O (0.45-0.30) 1.96 0.45(1-0.45) 0.30(1-0.30) 60 +] 55 O (055 -070) 196 0Ss(1-055), 070(1– 0.70) 55 60 0.45(1-0.45). O 0.45-0.30) 2.58 0.30(1-0.30) 55 60 O (ass-070 258SS(1-05S) 70(1-07OT 55 +] 60

A major car dealership has several stores in a big city. The owner wants to determine if there is a difference in the proportion of SUVS that are sold at stores A and B. The owner gathers the sales records for each store from the past year. A random sample of 55 receipts from store A shows that 30 of the sales were for SUVS. Another random sample of 60 receipts from store B shows that 42 of the sales were for SUVS. Assuming conditions for inference are met, what is the 999% confidence interval for the difference in proportions of sales that are SUVS? Find the z-table here. O (0.45-0.30) 1.96 0.45(1-0.45) 0.30(1-0.30) 60 +] 55 O (055 -070) 196 0Ss(1-055), 070(1– 0.70) 55 60 0.45(1-0.45). O 0.45-0.30) 2.58 0.30(1-0.30) 55 60 O (ass-070 258SS(1-05S) 70(1-07OT 55 +] 60

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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A major car dealership has several stores in a big city. The owner wants to determine if there is a difference in the proportion of SUVS that are sold at stores A and B. The owner gathers the sales records for each store from the past year. A random sample of 55 receipts from store A shows that 30 of the sales were for SUVS. Another random sample of 60 receipts from store B shows that 42 of the sales were for SUVS. Assuming conditions for inference are met, what is the 99% confidence interval for the difference in proportions of sales that are SUVS? Find the z-table here. O (0.45-0.30) ±1.96, 0.45(1–0.45), 0.30(1–0.30) 60 55 055(1-055), 0.70(1-0.70) 55 60 O (055 -0.70) ±1.96 O (0.45 -0.30) 2.58 0.45(1-0.45), 0.30(1-0.30) 60 55 O (a55-0.70) 25s 055(1-055), 07O(1-0.70) 55 60 Mak this and retum Save and Exit Next Submit 96 8 9. k COく
Transcribed Image Text:A major car dealership has several stores in a big city. The owner wants to determine if there is a difference in the proportion of SUVS that are sold at stores A and B. The owner gathers the sales records for each store from the past year. A random sample of 55 receipts from store A shows that 30 of the sales were for SUVS. Another random sample of 60 receipts from store B shows that 42 of the sales were for SUVS. Assuming conditions for inference are met, what is the 99% confidence interval for the difference in proportions of sales that are SUVS? Find the z-table here. O (0.45-0.30) ±1.96, 0.45(1–0.45), 0.30(1–0.30) 60 55 055(1-055), 0.70(1-0.70) 55 60 O (055 -0.70) ±1.96 O (0.45 -0.30) 2.58 0.45(1-0.45), 0.30(1-0.30) 60 55 O (a55-0.70) 25s 055(1-055), 07O(1-0.70) 55 60 Mak this and retum Save and Exit Next Submit 96 8 9. k COく
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