a perishable dairy product is ordered daily at a particular supermarket. the product, which costs $1.15 per unit, sells for $1.59 per unit. if units are unsold at the end of the day, the supplier takes them back at a rebate of $1 per unit. assume that daily demand is approximately normally distributed with µ = 140 and ? = 25.
*to identify the areas for standard normal distribution use the z tables.*
a) what is your recommended daily order quantity for the supermarket? round your answer to the nearest whole number.
q* =
b)what is the probability that the supermarket will sell all the units it orders? round your answer to three decimal places.
p(stockout) =
c)in problems such as these, why would the supplier offer a rebate as high as $1? for example, why not offer a nominal rebate of, say, 25¢ per unit? what happens to the supermarket order quantity as the rebate is reduced?
the higher quantity that the supermarket should order. (choose from : increases or decreases)

Overproduction of uric acid in the body can be an indication of cell breakdown. this may be an advance indication of illness such as gout, leukemia, or lymphoma.† over a period of months, an adult male patient has taken nine blood tests for uric acid. the mean concentration was x = 5.35 mg/dl. the distribution of uric acid in healthy adult males can be assumed to be normal, with σ = 1.87 mg/dl. (a) find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. what is the margin of error? (round your answers to two decimal places.) lower limit upper limit margin of error (b) what conditions are necessary for your calculations? (select all that apply.) σ is unknown n is large σ is known normal distribution of uric acid uniform distribution of uric acid (c) interpret your results in the context of this problem. there is not enough information to make an interpretation. the probability that this interval contains the true average uric acid level for this patient is 0.05. the probability that this interval contains the true average uric acid level for this patient is 0.95. there is a 95% chance that the confidence interval is one of the intervals containing the population average uric acid level for this patient. there is a 5% chance that the confidence interval is one of the intervals containing the population average uric acid level for this patient. (d) find the sample size necessary for a 95% confidence level with maximal margin of error e = 1.10 for the mean concentration of uric acid in this patient's blood. (round your answer up to the nearest whole number.) blood tests