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The average labor charge for automobile mechanics is $54 per hour. The standard deviation is $4. Using Chebyshev's theorem, find the percentage of data values that will fall in the range of $48 to $60.
Find a 95% confidence interval for the mean amount of money µ spent at the waiter's tables.
Consider different types of qualitative data collection and analysis methods and the ways in which they can support business decision making and strategies.
If H0 is in reality false and it is legitimate to use a directional H1, which of the following will yield a more powerful test? one-tailed alternative hypothesis
Fast Service Truck Lines uses the Ford Super Duty F-750 exclusively. Management made a study of the maintenance costs and determined the number of miles traveled during the year followed the normal distribution.
Standard deviation of 14 inches. What is the probability that the mean annual snowfall will be between 70 and 80 inches.
The sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the lower limit would be?
On their farm, the Friendly family grows apples that they harvest each fall and make into three products- apple butter, applesauce, and apple jelly.
A random variable X that has pmf given by p(x) = 1/ (n+1) over the range Rx = {0,1,2,...,n} is said to have a discrete uniform distribution. Find the mean and variance of this distribution.
The U.S.Census Bureau announced that the median sales price of new homes sold i April 2009 was $221,660, and the mean sales price waas $274,300. Assume that the standard deviation of the prices is $90,000.
A random sample of 80 students is selected for a particular study. What is the probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50?
Survey on marital status to determine whether the data is qualitative or quantitative
Can you conclude that the information in the article is untrue? Use the 0.05 significance level. Determine the p-value and explain its meaning.
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