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Zipper Products, Inc., produces granola cereal, granola bars, and other natural food products. Its natural granola cereal is sampled to ensure proper weight. Each sample contains eight boxes of cereal. The overall average for the samples is 17 ounces. The range is only 0.5 ounce. Determine the upper and lower control-chart limits for averages for the boxes of cereal.
The number customers who enter a supermarket each hour is normally distributed with a mean of 600 and a standard deviation of 200. The supermarket is open 16 hours per day.
Suppose the manufacturers claim is right, determine the probability the mean of sample is 47,840 miles or less?
Assume we interested in relationship between the age of individual, as measured by visits. Suppose after selecting 15 members the observation:
They hope to use a sample size such that, with probability 0.95, the error will not exceed 0.04. What sample size will ensure this, regardless of what sample proportion value occurs when they gather the sample?
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
If the coefficient of correlation is 0.4, the percentage of variation in the dependent variable explained by the variation in the independent variable
What types of variables are measured using Pearson coefficient, and what types variables are measured with chi square; I am looking for names of variables (e.g., nominal, interval)?
The average could be a poor estimate of the spending of all teenagers given that only teenagers in malls were sampled.
Using alpha = 0.05 and a computed value of +4.49, can we conclude that the percentage of claims for married policyholders is less then for single policyholders?
Suppose the following table shows the number of colds 7 different people got during the typical cold season based on the number of times they washed they washed their hands per day during the cold season.
Estimate and interpret the p-value of the calculated test statistic above.
A random sample of 50 female CFO's and a random sample of 40 male CFO's are selected. Find the expected value of the sample mean difference.
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