You are analyzing data for a research project. you have a two-sided two-sample t-test with the following hypotheses being tested: h0: μ1 − μ2 = 0ha: μ1 − μ2 ≠ 0which of the following results for the confidence interval does not provide enough evidence to reject the null hypothesis? a 95% confidence interval: (−4.223, −1.989)b 95% confidence interval: (−2.945, 0.983)

At which stage would you introduce your product to the market at large? a. development stage b. market testing stage c. commercialization stage d. ideation stage

M. cotteleer electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. one of the components has an annual demand of 235 units, and this is constant throughout the year. carrying cost is estimated to be $1.25 per unit per year, and the ordering (setup) cost is $21 per order. a) to minimize cost, how many units should be ordered each time an order is placed? b) how many orders per year are needed with the optimal policy? c) what is the average inventory if costs are minimized? d) suppose that the ordering cost is not $21, and cotteleer has been ordering 125 units each time an order is placed. for this order policy (of q = 125) to be optimal, determine what the ordering cost would have to be.

Although appealing to more refined tastes, art as a collectible has not always performed so profitably. during 2003, an auction house sold a sculpture at auction for a price of $10,211,500. unfortunately for the previous owner, he had purchased it in 2000 at a price of $12,177,500. what was his annual rate of return on this sculpture? (a negative answer should be indicated by a minus sign. do not round intermediate calculations and enter your answer as