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A consumer survey indicates that the average household spends m=$155 on groceries each week. The distribution of spending amounts is normal with a standard deviation of o=$25. Based on this distribution
a) What proportion of the population spends more than $150 per week on groceries?
b) What is the probability of randomly selecting a family that spends less than $110 per week?
c) How much money do you need to spend each week to be in the top 10% of spenders?
Answer all of these questions using R Commander. Include all graphs, outputs from R Commander.
Form a frequency distribution and a percentage distribution that have class intervals with the upper class limits $99, $119, and so on.
The average height of american woman is distributed normally, with a mean of 63.5 inches and a standard deviation 2.5 inches. Approximately what percentage of american women are taller than 58.5 inches,
The distributor selects one cable at random from among all cables in stock. If the cable selected is found to meet the strength specifications, what is the probability that the cable was produced at Plant A?
A TV spot in the Channel 22 early news costs $1500. The average quarter hour Adult 25-54 audience is 15,000. What is the CPM?
Do the thinner cans appear to be strong enough so that they are not crushed when the top lids are pressed onto the sides?
A population of scores has p = 44. In this population, an X value of 40 corresponds to z = - 0.50. What is the population standard deviation.
Each scenario involves randomly selecting n i observations from four, independent, Normal populations as described.
Given that Vacationer will travel less than 500 miles, Find out the probability that he/she will drive or take the Bus/Train?
Find the value of W, the test statistic for a two sample rank-sum test that would compare the two methods for losing weight. Give the details of how you found W. Please show your step-by-step hand calculation here.
Given that P (A) = 0.7, P (B) = 0.5, and P (A B) = 0.8. Find the following probabilities:
A study 200 nurses found that of 125 females nurses, 56 had bachelor's degree; and of 75 male nurses; 34 had bachelor degrees. if a nurse is selected at random, find the probability that the nurse is a female nurse with a bachelor degree.
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