(c)A particular nuclear plant releases a detectable amount of radioactive gases twicea month on the average(iii) If, in fact, 12 or more emission are detected during a 3-month period, do youthink that there is a reason to suspect the reported average figure of twice amonth? Explain, on the basis of the probability involved.

Answered: Image /qna-images/answer/b4b66acf-160e-4aac-bbd4-b1cf852f4f87.jpg

Answered: (c) A particular nuclear plant releases…

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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Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2.6 and standard deviation 0.79. In USE SALT (a) If a random sample of 25 specimens is selected, what is the probability that the sample average sediment density is at most 3.00? Between 2.6 and 3.00? (Round your answers to four decimal places.) at most 3.00 between 2.6 and 3.00 (b) How large a sample size would be required to ensure that the first probability in part (a) is at least 0.99? (Round your answer up to the nearest whole number.) specimens
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A manufacturer of battery claims that the life of his batteries is approximately normally distributed with a mean life of 4 years and a standard deviation equal to one (1) year. What is the probability that the battery last more than five (5) years.
Suppose that from the past experience a professor knows that the test score of a student taking his final examination is a random variable with mean 61 and a standard deviation 8.5. how many students would have to take the examination to ensure, with probability at least 0.94, that the class average would be within 3 of 61?
A book seller has the following schedule of weekly. demand for the book "Elementary Quantitative Methods" No. of copies on demand : Probability : 100 200 300 400 500 .02 .05 .09 .12 .20 .15 Find the expected number of copies demanded per week.
What is the probability of b and c
2. A study propose the Weibull distribution (a = 2.0, B= 200) as a model for time to failure of solid insulating specimens subject to AC voltage. a) What is the probability that a specimen's lifetime is at least 250? Round your answer to four decimal places. b) What is the median time to failure? Round you answer to two decimal places.
Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2.63 and standard deviation 0.83. In USE SALT (a) If a random sample of 25 specimens is selected, what is the probability that the sample average sediment density is at most 3.00? Between 2.63 and 3.00? (Round your answers to four decimal places.) at most 3.00 between 2.63 and 3.00 (b) How large a sample size would be required to ensure that the first probability in part (a) is at least 0.99? (Round your answer up to the nearest whole number.) specimens
The shape of the distribution of the time required to get an oil change at a 15-minute oil-change facility is unknown. However, records indicate that the mean time is 16.3 minutes, and the standard deviation is 4.6 minutes. Complete parts (a) through (c) below.
Suppose weights, in pounds, of dogs in a city have an unknown distribution with mean 31 and standard deviation 5 pounds. A sample of size n=39 is randomly taken from the population and the sum is taken. What is the probability that the resulting sum is between 1180 and 1194 pounds?

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