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A student earns $14 per hour for tutoring and $7 per hour as a teacher's aid. Let X= the number of hours each week spent tutoring, and y=the number of hours each week spent as a teachers aid. Write the objective function that describes total weekly earnings. Z=?
rolling a pair of fair die 10 times and recording the number of times we get a 7. what is the probability of rolling
With a normal distribution of 50 and standard deviation of population =10, how do I figure out the score at the 40th percentile? How do figure out the % of scores falling above 70? How do figure out between what scores do the middle 50 percent of cas..
a friend of mine is giving a dinner party. his current wine supply includes 8 bottles of zinfandel 12 of merlot and 11
What statistical test did the researchers use to determine if there was a statistically significant difference in levels of self-esteem between the boys and the girls?
Construct a 98% confidence interval for the population mean and interpret the result (round margin of error E to the nearest dollar).
If the mean systolic blood pressure is 130 and the standard deviation is 8, find the upper and lower readings that would qualify people to participate in the study.
Given that Z is standard normal randam variable. Compute the value of Z if area between –Z and Z is 0.754:
State the null and alternative hypothesis if the average electric bill for residents of White Pine Estates exceeds $52.98 per month.
you have been called in as a consultant to help the hospital administration determine the best method of applying the
The flashlight batteries produced by one of the northern manufacturers are known to have an average life of 60 hours with a standard deviation of 4 hours. Use Chebyshev's theorem to answer the following questions.
Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmis..
10.3% of students in statistics actually take the course because they want to. If two students are selected at random, find the probability that both took statistics because they wanted to.
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