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In a certain rural area of New York state, 80% of drivers use chains on the car tires for winter driving. 60% of drivers carry a snow shovel in their car and use chains on their car tires. 15% of drivers carry a shovel and do not use chains on their tires. A random driver from this area is selected Draw a Ven diagram
Find the probability that they carry a shovel, given they use chains.
Given the person does not use chain, find the probability that they carry a shovel.
Find the probability that the person uses chains or carries a shovel.
Listed below are birth weights (in kilograms) of male babies born to mothers on a special vitamin supplement (based on data from the New York State Department of Health).
the 2003 statistical abstract of the united states reported the percentage of people 18 years of age and older who
q1 a researcher claims that the standard deviation of the ages of cats is smaller than that for dogs. a random
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information.
The heights of adults in one town have a mean of 66.3 inches and a standard deviation of 3.3 inches. What can you conclude from Chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches..
A personnel manager has a computer-generated list of all employees that indicates that 70 percent are full-time employees, 20 percent are part-time employees, and 10 percent are furloughed or laid-off employees.
State the null and alternative hypotheses and what is the p-value for a sample of 180 undergraduate students with a sample mean credit card balance of $3325?
the bekaert company of belgium is a major supplier of bead wire for tire re-enforcement and other specialized wire
A sample of PVC pipes coming off a production line were tested for pipe diameter size. The statistical results (in millimeters) were:
1 a random sample of 60 college graduates results in a mean time to graduate of 4.58 years with a standard deviation of
Does correlation equal causation? Does the strength of correlation depend on the direction of the relationship? What is the meaning of a zero correlation? Explain your answers.
of the first 10000 votes cast in an election 5180 were for candidate a. find a 95 confidence interval for the fraction
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