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Of the 400 respondents in the Christmas tree market survey, 43% had no children at home and 57% had at least one child at home. Corresponding figures for most recent census are 48% with no children and 52% with at least one child. Test null hypothesis that telephone survey technique has the probability of selecting the household with no children which is equal to value obtained by census. Give z statistic (rounded to two decimal places) and P-value. What do you conclude? (Use = 0.10.).
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11.
A random sample of n = 4 scores is obtained from a normal population with = 20 and = 4. What is the probability of obtaining a mean greater than M = 22 for this sample?
In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
An auditor for a large oil corporation has taken a random sample of monthly credit card charges for 32 individual (non-corporate) accounts.
The simple coefficient of determination is the proportion of total variation explained by the regression line.
When planning the new baseball stadium for Washington DC, you are asked to find the break-even point for the number of luxury skyboxes built.
First step of analytical hierarchy process doesn't include?
Compute the 95% confidence interval for the proportion of adults who are planning to buy a new car in the next 6 months.
If the restaurant stocks 400 hamburgers and 150 chicken sandwiches for a given day, what is the probability that it will run out of hamburgers or chicken sandwiches (or both) that day? Assume that the demand for hamburgers and the demand for chick..
Decision rule which chooses alternative associated with smallest maximum opportunity loss is?
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
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