USPS claims that no more than 9% of all packages arrive at the address late. Assuming...
USPS claims that no more than 9% of all packages arrive at the address late. Assuming the binomial distribution applies, if a sample size of n = 30 packages is randomly selected, solve the following probabilities. Use Excel or StatCrunch to solve.
ROUND THE FOLLOWING ANSWERS TO FOUR (4) DECIMAL PLACES.
a. What is the probability that exactly 2 packages will be late?
b. What is the probability that 3 or less packages will be late?
c. What is the probability that 5 or more packages will be late?
Part 2
Based on the USPS problem above, what is the mean or Expected Value, E(x) in the sample of packages that will arrive late?
2.7
27
30
1.6
Part 3
Based on the USPS problem above, what is the standard deviation in the sample of packages that will arrive late?
2.46
2.70
1.57
1.64
Homework Answers
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USPS claims that no more than 9% of all
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for word plagarism, paraphrasing plagarism, or not plagarism at
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