
EBK PROBABILITY AND STATISTICS FOR ENGI
9th Edition
ISBN: 8220102958432
Author: DEVORE
Publisher: CENGAGE L
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Question
Chapter 4, Problem 109SE
a.
To determine
Find the probability that the depth of the deepest pit is at most 150.
Find the probability that the depth of the deepest pit is at most 300.
Find the probability that the depth of the deepest pit between 150 and 300.
b.
To determine
Find the value of the depth such that 90% of pits are below it.
c.
To determine
Find the probability density function of X.
d.
To determine
Find the occurrence of maximum value on the measurement.
e.
To determine
Find the mean for given
Compare the value of mean with the
Construct the graph of probability density function.
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hypothesis, 40 0. What level of type II error would you recommend here?
=
Round your answer to four decimal places (e.g. 98.7654). Use α = 0.05.
β
= 0.0594
What sample size would be required?
Assume the sample sizes are to be…
Consider the hypothesis test Ho: 0
s² =
=
4.5; s² = 2.3. Use a
= 0.01.
=
σ against H₁: 6 > σ2. Suppose that the sample sizes are n₁ =
20 and 2
= 8, and that
(a) Test the hypothesis.
Round your answers to two decimal places (e.g. 98.76).
The test statistic is fo
=
1.96
The critical value is f
=
6.18
Conclusion:
fail to reject
the null hypothesis at a = 0.01.
(b) Construct the confidence interval on 02/2/622 which can be used to test the hypothesis:
(Round your answer to two decimal places (e.g. 98.76).)
035
Chapter 4 Solutions
EBK PROBABILITY AND STATISTICS FOR ENGI
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