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A health care worker wishes to see if the average number of family day care homes per county is greater than the average number of day care centers per county. The number of homes and centers for a selected sample of counties is shown. The data meets all the assumptions that are needed to carry out a parametric statistical procedure. What is the calculated test statistic using the following data
A. 1.445
B. 0.179
C. 2.029
D. 0.098
a beam has a solid square cross section of 100mm and simply supported by two supports 3 metres apart. calculate the
The average time it took then to change a water pump was 18 minutes. The standard deviation of the sample was 3 minutes. Find the 99% confidence interval of the true mean.
Construct the 90 percent confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Round your answers to 3 decimal places.)
the average cost of a one bedroom apartment in a town is 550 per month. what is the probability of randomly selecting a
Determine the sample size needed in order to be 99% confident that the sample proportion of the current customer accounts is within .03 of the true proportion of all current accounts for this company.
Conduct the most appropriate hypothesis test using a 0.05 significance level. Construct a 95% confidence interval for the true proportion of automobiles with drive trains that fail.
a study of employees at a large company found a negative correlation between body weight and distance walked on an
Compute a 90% confidence interval for the population mean, based on the sample 25, 27, 23, 24, 25, 24, and 59. Change the number from 59 to 24 and recalculate the confidence interval.
Taking care to control for weather conditions and other variables as much as possible. Define the null hypothesis.
A recent article in theWall Street Journal reported that the prime rate for large banks now exceeds 9 percent. A sample of eight small banks in the Midwest revealed the following prime rates (in percent):
A bridge hand consists of 13 cards dealt at random from an ordinary deck of 52 playing cards. How many possible bridge hands are there?
1. Explain why excise taxes are more effective at raising tax revenues when applied to products with price inelastic demand versus ones with price elastic demand. Under what conditions would it be possible for tax revenues to decline with highe..
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