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Compute the population mean using the normal distribution.
The actual amount of instant coffee that a filling machine puts into 4-ounce jars may be looked upon as a random variable having a normal distribution with σ =0.04 ounce.
a). If only 2 percent of the jars are to contain less than 4 ounces, what is the mean fill of these jars?
b). If the variability of the filling machine is reduced to 0.025 ounce, verify that this will lower the required average amount of coffee to 4.050 ounces and yet keep 98 percent of the jars above 4 ounces.
Dividend is expected to grow 7% a year for next 3 years and then at 5% a year after that. Determine the expected dividend per share for each of the next five years?
A bank wants to get new customers for their credit card. They try two different approaches in their marketing campaign. The first promises a "cash back" reward; the second promises low interest rates. A sample of 500 people are mailed the first br..
what percent of the total number of seeds germinated?
Show some work for each part. A diagram can be helpful. A survey of adults found the following: 65 percent of the adults drink coffee. 35 percent drink tea. 80 percent drink coffee or tea (or both). If we choose a surveyed adult at random, find t..
Find out the test statistic P-value, and critical value, and state the final conclusion. The mean IQ score of statistic professors is less than 120. Sample data: n = 46. Suppose that = 17, and the significance level is = 0.05.
Using the data for women, complete an analysis of CHD incidence in women similar to the one completed for men.
Suppose that 46 percent of families living in a certain country own a car and 18 percent own an SUV. The Addition Rule might suggest, then, that 64 percent of families own either a car or an SUV. What's wrong with that reasoning.
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
Calculate the correlation and the regression equation and plot the data in the space provided.
This distribution is positively skewed. The standard deviation of the population is not known.
Assume that you choose a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
Calculate the expected number of days it takes to get the order and standard deviation.
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