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Pay your bills: In a large sample of customer accounts, a utility company determined that the average number of days between when a bill was sent out and when the payment was made is 32 with a standard deviation of 7 days. Assume the data to be approximately bell-shaped.
(a) Between what two values will approximately 68% of the numbers of days be?
(b) Estimate the percentage of customer accounts for which the number of days is between 18 and 46.
(c) Estimate the percentage of customer accounts for which the number of days is between 11 and 53.
What other variables, aside from her mother's height, might be useful for improving your prediction? How could you use these variables in conjunction with the mother's height?
The annual rainfall in a certain region is approximately normally distributed with mean 41.3 inches and standard deviation 5.8 inches.
A technician services machines as companies in the Phoenix area. Depending on the type of malfunction, the service call can take exactly 1, 2, 3, or 4 hours. The different types of malfunctions occur at the same frequency.
questiona it is noted that 8 of kaplan students are left handed. if twenty 20 students are randomly selectednbsp
Suppose that the distribution of calories is approximately normal with o = 10. Find the probability that a randomly selected chocolate bar will have a) Between 200 and 220 caloies.
You have developed a series of questions to measure job satisfaction for bus drivers in New York City. A random sample of 100 drivers has an average score
Suppose the officials in the city or town where you live would like to ask questions of a "representative sample" of the adult population.
What is the difference between the mean and the median and which would you report if you had a skewed set of data to describe the central tendency?
A woman is pregnant, with a due date of January 10, 2014. Of course, the actual date on which she will give birth is not necessarily the due date.
Find out the CSR performed by the Company and the level of activeness projected by Company in this area?- Estimate the impact of the CSR activities on the financial performance of the company and consumer satisfaction?
Which of the following is closest to the price of the bond assuming that the bond makes quarterly coupon payments,
Find 99% Confidence Interval for Population Proportion people infected in Miami area.
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