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The travel time for a college student traveling between her home and her college is uniformly distributed between 40 and 90 minutes.
The probability that her trip will take exactly 50 minutes is:
a) zero
b) 0.02
c) 0.06
d) 0.20
They wish to conduct a survey of their students and find a simple random sample of 50 Freshmen, 40 Sophomores, 35 Juniors, and 30 Seniors.
At the 0.10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
Using a 5% level of significance, is there any difference in proportion of guests who would select the two resorts? What is your conclusion?
Find the expected value of the number of tests taken.
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For a normal distribution, find the z-score value that separate the middle 90% of the distribution from the 10% in the tails.
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
Each vehicle had the gallon of gas added to the empty tank and then driven until empty. Number of miles travelled for all twelve readings are below. Use data to compute the mean and median mileages.
Small bag of Skittles candies has following assortment: red (12), blue (5), orange (15), brown (0), green (16), and yellow (7). Create the probability distribution for x.
LSAT scores are normally distributed, with a mean of 150 and s = 10.
Find the value of Proportion and construct a 90% confidence interval for proportion.
Data is given in the table below. Process data as illustrate in the paper on the Mann-Whitney U test. Critical Value:Test Statistic (Show procedure.)Z .
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