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Sugar packaged by a certain machine has a mean weight of 5lb and a standard deviation of 0.02 lb. For what values of c can the manufacturer of the machinery claim that the sugar packaged by this machine has a weight between 5 - c and 5 + c lb with probability at least 96%?
In a survey of women in a certain country (ages 20-29) the mean height was 64.5 inches with a standard deviation of 2.75 inches. What height represents the 90th percentile? What height represents the first quartile?
The proportion of parts in an inventory that are outdated and no longer useful is thought to be 0.10. To check this, a random sample of n = 100 parts is selected and 14 are found to be outdated. Based upon this information, what is the probability..
Suppose that you have a bag filled with 50 marbles, 15 of which are green. What is the probability of choosing exactly 3 green marbles if a total of 10 marbles are selected?
Use the hypergeometric formula to find this probability. The lottery commission also pays if a contestant matches 4 or 5 of the 6 winning numbers. Hint: Divide the 44 numbers into two groups, winning numbers and nonwinning numbers.
In regression equation, the value of y-intercept indicates the value of Y when the value of X is zero.
Explain the overall statistical significance of the model, Explain the statistical significance for each independent variable in the model
What percentage of items will weigh between 6.4 and 8.9 ounces?
The statewide incidence of gonorrhea is 50 per 100,000 over a 3 month period. Is the number of gonorrhea cases in this county unusual for this time period?
Using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 7.3? Fully explain your answer.
Statistics practice questions answers in a correct order and if possible copy all the graphs in excel. How large a sample size (trading days) is needed to estimate the population mean number of shares traded per day to within 100 million with 95% co..
If the same sample results had been obtained from a random sample of 16 students, could the students' claim be accepted at a lower level of significance?
The researchers gave each subject a battery of nine separate neurological and psychological examinations designed to assess their mental capabilities.
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