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Author Question: The time taken to deliver a pizza has a uniform probability distribution from 20 minutes to 60 ... (Read 87 times)

waynest

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on: Jul 24, 2018
The time taken to deliver a pizza has a uniform probability distribution from 20 minutes to 60 minutes. What is the probability that the time to deliver a pizza is at least 25 minutes?
 a. 0.125
  b. 0.300
  c. 0.700
  d. 0.875

Question 2

A survey at a large public university reveals that many students hold a (part-time) job while going to college. Out of 127 female students surveyed, 95 have a job and out of 143 male students, 97 have a job. Calculate a 95 confidence interval for the difference in proportions.


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mmj22343

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Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

(-0.0378, 0.1772)


waynest

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Reply 2 on: Jul 24, 2018
Excellent

peter

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Reply 3 on: Yesterday
Wow, this really help

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