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The following quantities of coffee purchases were made at a coffee kiosk in the lobby of an office building over a 13-week period:
Week PurchasesWeek 1 87Week 2 81Week 3 75Week 4 75Week 5 75Week 6 70Week 7 62Week 8 62Week 9 62Week 10 62Week 11 62Week 12 56Week 13 56
1.Calculate the mean, median, and mode for the data.
2.Prepare a frequency distribution for the data.
3.Calculate the standard deviation for this data.
4.Explain why statisticians typically use the standard deviation rather than the average deviation.
Make a forecast for 2005, using a trend model of your choice or a judgment forecast. Discuss. Note: Time increments are 5 years, so use t = 6 for your 2005 forecast.
Find out the upper and lower bounds on average life expectancy of the Canadian women such that at least 90% of all population is included.
How would the General Counsel's decision in Part (b) change if the cost of selling the second suit were only $200,000? What if the cost were $900000?
Let x1, ..., xn be a random sample from an exponential distribution, X ~ EXP(theta) a) If x(bar) = 17.9 with n = 50, then find a one-sided lower 95% confidence limit for theta.
Find the range, standard deviation, and variance for the scores.
Given an infinite population with a mean of 75 and a standard deviation of 12, the probability that the mean of a sample of 36 observations, taken at random from this population
The amounts of money won by the top ten finishers in a famous car race are listed below. What was the mean prize earned? Round your answer to the nearest cents.
The mean amount purchased by a typical customer at Churchill\'s Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the foll..
Make up a scatter diagram with 10 dots for each of the following situations:
Choose at random one of the random sample averages of 5 rectangles. Calculate the average value for a random sample of 20 rectangles.
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
Paired samples t-test for the given data - financial advice from the voluntary organization - A local voluntary organization affiliated to the Citizens Advice Bureau offers free financial advice to residents in the area who are registered debtors
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