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Question: In determining automobile-mileage ratings, it was found that the mpg (X) for a certain model is normally distributed, with a mean of 33 mpg and a standard deviation of 1.7 mpg. Find the following:
a. P (X < 30)
b. P (28 < X < 32)
c. P (X > 35)
d. P(X > 31 )
e. The mileage rating that the upper 5% of cars achieve.
If a sample of size 200 contains 120 values that are less than m0 and 80 values that are greater, what is the p-value of the test of the hypothesis that the median is equal to m0?
Is there evidence to suggest that the process average differs from the target value?
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If 55% of the students were dissatisfied and 200 were selected randomly, what is the probability that at least half would be dissatisfied?
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waiters at finegolds restaurant and lounge earn most of their income from tips. each waiter is required to tip-out a
At the 0.10 level, do males and females differ significantly in terms of making multiple transactions? Determine and interpret the p-value for this test, then construct and interpret the 90% confidence interval for π1 - π2.
Exercise 8 The table below gives data on moisture content for specimens of a certain type of fabric. Determine control limits for a chart with center line at height 13.00 based on σ = .600, construct the control chart, and comment on its appearanc..
Describe the purpose of the link function of a GLM. What is the identity link? Explain why it is not often used with binomial and Poisson responses.
in constructing a confidence interval for a mean with unknown variance with a sample of 25 items bob used z instead of
If there is relationship between parental income and SAT score, why can't we conclude that differences in score are caused by differences in parental income?
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