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Researchers studying how a car's Fuel Efficiency varies with its Speed drove a compact car 200 miles at various speeds on a test track. Their data are shown in the table.
Speed (mph)
35
40
45
50
55
60
65
70
75
Fuel Eff. (mpg)
25.9
27.7
28.5
29.5
29.2
27.4
26.4
24.2
22.8
Create a linear model for this relationship and report any concerns you may have about the model.
Suppose that these 49 patients constitute the random sample, and that population is normally distributed with standard deviation of 10. Calculate the 95% confidence interval for heartbeats per minutes in population.
if a white-collar worker is chosen at random from this group, what is the probability that he or she prefers light beer (to reg. beer or none at all)?
Pproportion who are sent to prison after pleading innocent and being found guilty? No, as the test value -1.96 is inside interval (-2.58, 2.58), No, as the test value -4.94 is outside interval (-1.96, 1.96).
let y1 y2 y3 and y4 constitute a random sample of size n 4 from a bernoulli population with parameter p. a determine
A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?
what are examples of variables that follow a binomial probability distribution? what are examples of variables that
1.do students tend to improve their sat mathematics sat-m score the second time they take the test? a random sample of
As Los Angeles Laker Carl Perkins comes up for a seventh free throw, announcer Chick Hearn notes that Perkins had made the last six out of six free throws and concludes that "the law of averages starts working for Golden State" (December 15, 1990)..
The information that the distribution of the serve speeds was bell shaped. What proportion of the player's serves are expected to be between 107 mph and 118 mph?
one of two urns is chosen at radom. then a ball is chosen from that urn. urn 1 contains 1 white balls and 3 red balls.
tudent from the high school is arbitarily selected. Reply the following questions: Determine the probability that the student's ACT score is less than 22?
In a box of 15 marbles, 4 are green. You choose 2 at random without replacement (a) Create a tree diagram for the 2 draws. (b) Create a probability model for the number of green marbles in two draws.
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