Certain articles, 0.5% of which are damaged are packed in boxes containing120 each. What proportion of the boxes are free from the damaged articles, andwhat proportion contains 2 or more damaged ones ?

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Answered: Certain articles, 0.5% of which are…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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According to an article in Newsweek, the natural ratio of girls to boys is 100:105 . In China, the birth ratio is 100:116 ( 46.3% girls). Suppose you don’t believe the reported figures of the percent of girls born in China. You conduct a study. In this study, you count the number of girls and boys born in 100 randomly chosen recent births. There are 42 girls and 58 boys born of the 100 . Based on your study, do you believe that the percent of girls born in China is 46.3 ? A.)What is the test statistic? Round your answer to three decimal places. (z / t ) = B.) What is the p -value? Round your answers to four decimal places. p -value = C.) Let α=0.05 . Decision: (Reject the null hypothesis / do not reject the null hypothesis) Reason for decision: ( a < p-value / a > p-value) Conclusion: There is (insufficient/ insufficient) evidence to conclude that the percentage of girls born in China is different from 46.3% .
At the beginning of 2018, a survey showed that a country with a total land area of 500,500 square kilometers had a population density of 483.3 per square kilometer. What was the total population during the survey? A. 96, 563,436 B. 182,086,700 C. 241,891,650 D. 350, 830,401 If the birth rate was 1.3%, how many individuals were born that year? A. 2,683,450 B. 3,144,591 C. 11,320,505 D. 22,463,682 If 612,300 individuals died on the same year, what was the death rate? A. 0.25% B. 0.5% C. 1.5% D. 2%
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The Humane Society is interested in finding out how many households in America have at least one cat. How many households must be surveyed to be 95% confident that the estimate will be within 4% of the true population percentage?
Existing data (year: 1995) (Observed values) Accident Age group of drivers Severity 18-30 30-50 Fatal 27 22 Grievous 27 15 injured Minor 82 60 50+ 40 44 97 Total 89 86 120 262 injury Total 136 Source: Office of the Dy. Commissioner of Police (Tra 204 437
In a town of 3,000 people, 600 are over 50 years of age and 400 are left-handed. It is also known that 15% of all left-handers in the town are over 50 years of age. How many people in the town are left-handed, over 50 years of age, or both?
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Certain articles, 0.5% of which are damaged are packed in boxes containing 120 each. What proportion of the boxes are free from the damaged articles, and what proportion contains 2 or more damaged ones ?