Don't drink and drive: A highway safety council reported that there were 3992 fatalities among drivers in auto accidents in a particular year. Following is a frequency distribution of their ages. Approximate the mean age. Round your answer to one decimal place. Age Number of Fatalities 11-20 327 21-30 1545 31-40 860 41-50 691 51-60 423 61-70 146

Don't drink and drive: A highway safety council reported that there were 3992 fatalities among drivers in auto accidents in a particular year. Following is a frequency distribution of their ages. Approximate the mean age. Round your answer to one decimal place. Age Number of Fatalities 11-20 327 21-30 1545 31-40 860 41-50 691 51-60 423 61-70 146

Essentials of Business Analytics (MindTap Course List)

2nd Edition

ISBN:9781305627734

Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Chapter6: Statistical Inference

Section: Chapter Questions

Problem 44P: The Port Authority also wants to determine if the gender profile of its customers has changed since...

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The table shows the leading causes of death in a certain country in a recent year. The population of the country was 316 million. If you lived in a typical city of 500,000, how many people would you expect to die of stroke each year? Cause Deaths Cause Deaths Heart disease 596,200 Alzheimer's disease 84,200 Cancer 575,600 Diabetes 73,300 Chronic respiratory diseases 143,700 Pneumonia/Influenza 53,600 Stroke 128,600 Kidney disease 45,600 Accidents 122,800 Suicide 38,300 Question content area bottom Part 1 About blank people would be expected to die of stroke each year.
The Port Authority also wants to determine if the gender profile of its customers has changed since last year, when 59.4% of its orders placed were placed by males. The genders for a sample of 49,896 orders placed this year are collected and recorded in the file PortAuthority. a. Formulate hypotheses that can be used to test whether the proportion of orders placed by male customers this year differs from the proportion of orders placed by male customers placed last year. b. Use the data in the file PortAuthority to conduct your hypothesis test. What is the p value for your hypothesis test? At = 0.05, what is your conclusion?
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