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If the least squares equation for sales data going from 1984 to 1990 is Y1 = 10 + 1.3X (in $ millions) found using the coded method, what is the plot on the straight line for 1988? (x and y values)
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Choose the correct conclusion regarding the claim that the weights of statistics text vary more than the weights of text in general.
If random sample of 9 loads is selected for a weight check, determine the probability that mean weight of those loads is more than 40.60 tons.
I'm trying to determine what happens to the sample size if the level of confidence is reduced from 95% to 90% but the allowable error and the standard deviation remain
Following sample data shows the weekly closing price of ABC stock. Compute the sample mean and variance from this data set.
Under older Federal Aviation Administration rules, airlines had to estimate the weight of a passenger as 185 pounds. That amount is for an adult traveling in winter, and it includes 20 pounds of carry-on baggage.
How large a sample size will need to be selected if we wish to have a 99% confidence interval with a margin for error of .10 oz?
Assume the distribution of the length of the cuts follows a normal distribution with a standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CD's Inc. What can we say about the shape of the distributio..
Find out a 95 percent confidence interval for population mean.
What information is provided by the sign (= or -) of the Pearson correlation? What information is provided by numerical value of the Pearson correlation?
What are the singleton subsets of X and Y? are the empty set and the sample space the singleton subsets?
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. You bought four tires. What is the probability that the average mileage of the four tires exceeds 66,000 miles?
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