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A data source generates hexadecimal characters. Let X be the integer value corresponding to a hex character. Suppose that the four binary digits in the character are independent and each is equally likely to be 0 or 1.
Let Y be the integer value of a hex character but suppose that the most significant bit is three times as likely to be a "0" as a "1". Find the probabilities for the values of Y.
At least half the patients are under 15 years old? First, describe how this can be modelled as a binomial distribution with 8 trials, where success is visitor age is under 15 years old and the probability of success is 20 percent.
The top 25 companies ranked by market capitalization operating in the washington DC, area along with the year they were founded and the number of employees are given below.
At the .01 significance level, can we conclude that there is more variation?
Develop a joint probability table for these data. If a student goes full time, determine the probability that school quality is first reason for selecting a school?
What percent of trucks logged more than 57,060 but less than 58,280 miles? What percent of Fords travelled 62,000 miles or less in the year?
Assume that you are conducting a survey of customer satisfaction regarding their cellular phone.
In order to compare the means of two populations, independent random samples of 484 observations are selected from each population, with the following results:
P-value to test hypotheses,
Construct a 98% prediction interval for the selling price of a 4l- year old house having 4500 square feet, 13 rooms, and an attached garage.
Make an interval estimate the population means score for the daycare children so that you are 95% confident that the true mean is in your interval.
Assume that the process is in control and that the population of all jar fills is normally distributed.
A point estimate for the difference between the mean purchases of the users of the two credit cards is:
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