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Of the 460 respondents in a Christmas tree market survey, 41% had no children at home and 59% had at least one child at home. The corresponding figures for the most recent census are 48% with no children and 52% with at least one child. Test the null hypothesis that the telephone survey technique has a probability of selecting a household with no children that is equal to the value obtained by the census. Give the z statistic (rounded to two decimal places) and the P-value. What do you conclude? (Use (alpha) = 0.10.) z = ? P-value =?
Risks and Odds in Everyday Life, James Burke claims that about 70 percent of all single men would welcome a woman taking the initiative in asking for a date. A random sample of 20 single men was asked if they would welcome a woman taking the initiati..
Use differential calculus to find both sales volume at which revenue is maximised and the maximum revenue available from sales of product X.
Explain the difference between a left-tailed, two-tailed, and right-tailed test with examples from your own experience for each.
Is the probability of the discharged of a patients needing carebeing depandent on their gender? Comment on your result. If u know patient is delayed, what is the probability that they are female?
What is the Population standard deviation of In a particular hospital, newborn babies were delivered yesterday. Here are their weights (in ounces).
A burglar plans his crimes so carefully that the lengths of the burglary are uniformly distributed between 50.0 and 52.0 minutes. Find the probability that a given burglary runs between 51.0 and 51.5 minutes.
Normally distributed with a mean of $70,000 and a standard deviation of $20,000. Twenty percents of the loans are larger than what amount?
Determine the highest and lowest scores and calculate the range. Determine an appropriate interval size (i) for grouping data. Draw a frequency polygon from the data. Are the data normal or skewed?
A researcher tested the reading ability of two groups of primary care patients. The scores on the test range from 1 to 9 with 9 indicating a high degree of reading ability and 1 very limited reading ability.
Multiple choice questions based on F-distribution.
Use the Rare Event Rule. Does the evidence support the claim?
Carry out the suitable hypothesis test, at alpha = .05, to find out whether there is a relationship between school/work and stress.
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