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a. The number of successes, a = 462 b. The sample size, n = 1155 OF c. As a decimal, the probability of success, p= 0.4 d. As a decimal, the probability of failure, q'= 0.6 e. What symbol is the critical value? z v 8 ✓o OB f. How much is the critical value? c. v. 2.32 X ✓o

a. The number of successes, a = 462 b. The sample size, n = 1155 OF c. As a decimal, the probability of success, p= 0.4 d. As a decimal, the probability of failure, q'= 0.6 e. What symbol is the critical value? z v 8 ✓o OB f. How much is the critical value? c. v. 2.32 X ✓o

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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A smartphone manufacturer is interested in constructing a 98% confidence interval for the proportion of smartphones that break before the warranty expires. 462 of the 1155 randomly selected smartphones broke before the warranty expired. Find the 98% confidence interval. Round answers to 2 decimal places where possible. a. The number of successes, a = 462 b. The sample size, n = 1155 c. As a decimal, the probability of success, p= 0.4 Or d. As a decimal, the probability of failure, q'= 0.6 e. What symbol is the critical value? z ✓✓ f. How much is the critical value? c. v. - 2.32 *The percentage is 98 *The two bounds are Our On and g. Find the 98% confidence interval and complete the sentence below. Conclusion: We estimate with a certain percentage confidence that the true proportion of smartphones that break before the warranty expires is between what two bounds? the *O
Transcribed Image Text:A smartphone manufacturer is interested in constructing a 98% confidence interval for the proportion of smartphones that break before the warranty expires. 462 of the 1155 randomly selected smartphones broke before the warranty expired. Find the 98% confidence interval. Round answers to 2 decimal places where possible. a. The number of successes, a = 462 b. The sample size, n = 1155 c. As a decimal, the probability of success, p= 0.4 Or d. As a decimal, the probability of failure, q'= 0.6 e. What symbol is the critical value? z ✓✓ f. How much is the critical value? c. v. - 2.32 *The percentage is 98 *The two bounds are Our On and g. Find the 98% confidence interval and complete the sentence below. Conclusion: We estimate with a certain percentage confidence that the true proportion of smartphones that break before the warranty expires is between what two bounds? the *O
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