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It is estimated that 26% of all California adults are college graduates and that 31 % of California adults are regular internet users. It is also estimated that 20% of California adults are both college graduates and regular internet users.
(a) What is the probability that a California adult is an internet user, given that he or she is a college graduate? Round your answer to 2 decimal places.
(b) Among California adults, what is the probability that a randomly chosen internet user is a college graduate? Round your answer to 2 decimal places.
Determine the mean and variance and determine the percentage of data values that fall in each of the following intervals:
In each hospital, fifteen patients were treated, each having one of three types of cancer (i.e., there were five patients with each type of cancer). The health of each patient was rated on a ten-point scale after one week, two weeks, and three wee..
Discuss whether the percent distribution of the cross-tab and chi-square supports/does not support the researcher's hypothesis.
a coin is known to be either fair corresponding to the null hypothesis h0 p12 or has heads on both sides corresponding
Demand for a popular athletic shoe is nearly constant at 800 pairs per week for a regional division of a national retailer. The cost per pair is $54.
A technician services machines of companies operating in the Phoenix Area. Depending on the type of malfunction, the service call can take exactly 1,2,3,4 hours. The different types of malfunctions occur at the same frequency.
The percentages of cones sales for chocolate, strawberry, and vanilla, are 75%, 60%, and 40%, respectively. For a randomly selected sale, define the following events:
Suppose the probability that a carton of eggs will contain at least one broken egg is 1/3. use a simulation of 20 trials to find the probability that the next three cartons will contain only unbroken eggs.
the abcd football association is considering a super ten football conference. the top 10 football teams in the country
A study of vehicle flow characteristics on acceleration lanes found that one out of every six vehicles uses less than 1/3 of the acceleration lane before merging into the traffic.
a confidence interval estimate for the population mean is given to be 36254476. if the standard deviation is 17.803
Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt "just on this trip"?
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