The cost of the goods that a company sold during a period is shown in its financial statements as ___________ and the cost of the goods that a company still has on hand at the end of the year is shown in the financial statements as ____________.  

The mean score of a college entrance test is 500; the standard deviation is 75. The scores are normally distributed. What percent of the students scored below 320?  

True or False: The t-test for coefficients in regression is only necessary for multiple linear regression?

At December 31, Amy Jo’s Appliances had account balances in Accounts Receivable of $311,000 and $970 (debit) in Allowance for Uncollectible Accounts. An analysis of Amy Jo’s December 31 accounts receivable suggests that the allowance for uncollectible accounts should be 2% of accounts receivable. Bad debt expense for the year should be:  

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. Assuming a population standard deviation of three hours, what is the required sample size if the error should be less than a half hour with a 99% level of confidence?

To be considered statistically valid, any sampling procedure must include some form of _____________________________________.

A regression model between sales (y in $1000), unit price (x1 in dollars), and television advertisement (x2 in dollars) resulted in the following function: ​ Y = 7 – 3×1 + 5×2​ ​  The coefficient of x2 indicates that if television advertisement is increased by $1 (holding the unit price constant), sales are expected to

If r = 0.65, what does the coefficient of determination equal?  

. A random sample consisting of the values listed below was taken from a normally distributed population.  Assuming the standard deviation of the population is unknown, construct a 99% confidence interval for the population mean that these samples were taken from. (27.4, 26.5, 25.7, 31.4, 28.2, 21.9, 16.3, 22.7, 18.8, 34.4, 29.2, and 20.5)  

Which of the following are true assumptions underlying linear regression?   (1) For each value of X, there is a group of Y values that is normally distributed. (2) The means of these normal distributions of Y values all lie on the regression line. (3) The standard deviations of these normal distributions are equal.