Oscar's T-shirt Shop charges a design fee of $25 plus $15 per shirt for each new order. If Oscar charges the cost per shirt to $20, which of the following representations would accurately describe the situation? I. The difference between the rate of change for the new cost structure and rate of change for the old cost structure is $5 per shirt. II. The equation y=25x+20 represents the relationship between the total cost of the order, y, and the number of shirts, x, in the new cost structure. III.

The null and alternate hypotheses are: h0: μ1 ≤ μ2 h1: μ1 > μ2 a random sample of 22 items from the first population showed a mean of 113 and a standard deviation of 12. a sample of 16 items for the second population showed a mean of 99 and a standard deviation of 6. use the 0.01 significant level. find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) state the decision rule for 0.010 significance level. (round your answer to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? use the 0.01 significance level.