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You are trying to transport all your friends to a concert in seven vehicles. Two vans each have 15 seats, four SUVs each have 7 seats, and one car has 5 seats.
a. What is the average vehicle size assuming each vehicle is filled to capacity?
b. Space is available for 63 friends. Suppose that each vehicle is filled to capacity and select a friend at random. Let the random variable X equal the number of friends in that friend's vehicle. Define the PDF for X.
c. Find the mean of X.
d. Find the standard deviation of X.
Describe the similarities between an F-ratio and a t statistic. The basic relationship between t statistic and F-ratios can be stated in an equation. What is that equation?
Determine the test statistic. Determine the P-value. What is the result of this hypothesis test?
steeley associates inc. a property development firm purchased an old house near the lakeshore campus of humber college.
question in a survey of a group of 60 families it is found that 38 families own a dog 45 own a cat and 26 own both a
consider the following scenario flipping one coin and rolling a ten-sided die. show the sample space and find
a sample of women were divided into four age groups group a 20-45.9 group b 46.0-55.9 group c 56.0-65.9 and group d 66
suppose a bar buys 10 of these sony tvs what is the probability that the average life time of the bar's tv is less than 19,650 hours.
If the auditor takes a simple random sample of 93 accounts, what is the probability that the mean of the sample will be within 110 dollars of the population mean?
Management is interested in determining whether their efficiency measures have actually reduced prices. Answer the following questions for a hypothesis test that could be used to test the claim of management.
A real estate investor has two houses: A and B. Each house may increase in value, decrease in value, or remain unchanged. Consider the experiment of investing in the two houses and observing the change (if any) in value:
Can long-term exposure to strong electromagnetic fields cause cancer?- Researchers in Italy tracked down 13 years of medical records for people living near Vatican Radio s powerful broadcast antennas.
If measurements are made instead on 4 separate days and the mean result is compared with the criterion 3.5, what is the probability that Judy is diagnosed as hypokalemic?
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