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Andy Roddick, a former professional tennis player believes he can make 70% of his first serves that are at least 110 mph. His friends believe the percentage should be smaller than 70%. They challenged Andy to do 400 first-serves. Andy successfully served 260 times. The null hypothesis is that he can serve 70% of his first serves. The observed percentage is %. Find the standard error for percentage. Hint: The SD for the box model is √.70*.30=0.46 The standard error for percentage is %. Round your answer to the nearest tenth of a percent(for example 6.3%)

Andy Roddick, a former professional tennis player believes he can make 70% of his first serves that are at least 110 mph. His friends believe the percentage should be smaller than 70%. They challenged Andy to do 400 first-serves. Andy successfully served 260 times. The null hypothesis is that he can serve 70% of his first serves. The observed percentage is %. Find the standard error for percentage. Hint: The SD for the box model is √.70*.30=0.46 The standard error for percentage is %. Round your answer to the nearest tenth of a percent(for example 6.3%)

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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The Z-statistic is. Round your answer to two decimal places. The p-value is %. Round your answer to the nearest tenth of a percent(for example 6.3%) If the significance level is set at 5%, do you reject the null hypothesis? Write yes or no. If the significance level is set at 1%, do you reject the null hypothesis? Write yes or no.
Transcribed Image Text:The Z-statistic is. Round your answer to two decimal places. The p-value is %. Round your answer to the nearest tenth of a percent(for example 6.3%) If the significance level is set at 5%, do you reject the null hypothesis? Write yes or no. If the significance level is set at 1%, do you reject the null hypothesis? Write yes or no.
QUESTION 7 Andy Roddick, a former professional tennis player believes he can make 70% of his first serves that are at least 110 mph. His friends believe the percentage should be smaller than 70%. They challenged Andy to do 400 first-serves. Andy successfully served 260 times. The null hypothesis is that he can serve 70% of his first serves. The observed percentage is %. Find the standard error for percentage. Hint: The SD for the box model is √.70*.30 =0.46 The standard error for percentage is %. Round your answer to the nearest tenth of a percent(for example 6.3%)
Transcribed Image Text:QUESTION 7 Andy Roddick, a former professional tennis player believes he can make 70% of his first serves that are at least 110 mph. His friends believe the percentage should be smaller than 70%. They challenged Andy to do 400 first-serves. Andy successfully served 260 times. The null hypothesis is that he can serve 70% of his first serves. The observed percentage is %. Find the standard error for percentage. Hint: The SD for the box model is √.70*.30 =0.46 The standard error for percentage is %. Round your answer to the nearest tenth of a percent(for example 6.3%)
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