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Jeff has an opportunity to invest his money. He can make a profit of $8000 with a probability of 0.4, a profit of $ 15,000 with a probability of 0.35, or he could lose $12,000 with a probability of 0.25. Find Jeffs expected profit.
Assume a factory manager wishes to buy machines to perform a certain task in a production process. Certain key parts are produced by these machines.
The mean increase is $332, and the standard deviation is $108. Give a 99% confidence interval for the mean amount of the increase. Does omitting the annual fee induce customers to charge more on their credit cards?
1. construct index numbers of price for the following data by applyingi laspeyres methodii paasches methodiii fishers
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
To develop 3-month and 2-month moving average for the time series.The following data represents demand for company ABC's products for the last 10 months.
Medical research team studied the ages of patient who had strokes caused by stress. Ages of 34 patients who suffered stress strokes. Create frequency distribution for these ages.
Ball bearings are manufactured with a diameter of 5 mm. But the process has variation, so the diameter is normally distributed with a mean of 5 mm and a standard deviation of .02 mm. A) What proportion of ball bearings are more than 5.03 mm?
Why do you use the chi-square statistic? What type of data is used with chi square analysis?
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
please expalin how do you solve this problemwe expect that students who do well on the midterm exam in a course will
what does the p-value tell the business statistician especially in terms of the normal curve? if the p-value is smaller
The sample variance was s^2=16.0. does the sample show sufficient reason to conclude that the population standard deviation is not equal to 3 at the 0.05 level of significance? use the p-value method.
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