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Computing the probability values using normal distribution.
Each month, an American household generates an average of 28 pounds of garbage for recycling. Assume the variable is normally distributed with a standard deviation of 1.9 pounds.
1. If a household is selected at random, find the probability that it generates less than 30.2 pounds of garbage for recycling.
2. Find the percentage of homes that generate between 27 and 31 pounds of recycling per month.
First, write down three social problems (e.g., drug abuse, gang membership, bullying, domestic violence, child abuse, etc) that we might attempt to predict using logistical regression.
Assume a sample of 400 American adults were taken. Show the sampling distribution of the proportion of adults who balance their checkbook at least once a month.
In the year 2000, the state of Indiana began a $40-million renovation of its state fairgrounds, which included the building of a miniature golf course and a state-of-the-art livestock building.
What is the probability that 19 from a sample of 22 shoppers will spend less than $20? What is the probability that at least 12 but not more than 17 from a sample of 22 shoppers will spend less than $20?
It was thought that the national average price per pound for Ospertan Basil Oil in 1999 in the US was $14 per pound. Since that time the Ospertan Basil Oil Cartel (OBOC) has tried to limit the supply of Ospertan Basil Oil reaching the U.S in order..
An Auditor of a small bsuiness has sampled 50 of 700 accounts. The sample mean total receivables is $435, and the sample standard deviation is $86. Find a 95% confidence interval for the total amount of receivables.
Choose one of these tests and describe in your own words, the purpose of the test, any particular assumptions or limitations pertaining to the test, and provide an example where you could employ the test.
Batch has just been completed. Determine probability that first three units manufactured in this batch will contain at least total of 4 defects?
To test the hypothesis that 48% of PC users have never used a Mac, the analyst took a sample of 50 PC customers drawn at random and found that 22 of them had never used a Mac.
Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year.
Based on the numbers presented, what do you think of the discrimination claim?
Use a .05 significance level to test claims that quarters manufactured with the new equipment have weights with a standard deviation less than .061
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