Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.30 gallons. From his records, he selects a random sample of 60 sales and finds the mean number of gallons sold is 8.60.

a.
What is the point estimate of the population mean? (Round your answer to 2 decimal places.)

Point estimate 8.60 O
b.
Develop a 99% confidence interval for the population mean. (Round your answers to 3 decimal places.)

Confidence interval 2.678 incorrect and 14.523 incorrect.

Emery pharmaceutical uses an unstable chemical compound that must be kept in an environment where both temperature and humidity can be controlled. emery uses 825 pounds per month of the chemical, estimates the holding cost to be 50% of the purchase price (because of spoilage), and estimates order costs to be $48 per order. the cost schedules of two suppliers are as follows: vendor 1 vendor 2 quantity price/lb quantity price/lb 1-499 $17 1-399 $17.10 500-999 $16.75 400-799 $16.85 1000+ $16.50 800-1199 $16.60 1200+ $16.25 (a) what is the economic order quantity for each supplier? (b) what quantity should be ordered and which supplier should be used? (c) the total cost for the most economic order sire is $

Which of the following is one of the five fundamental questions? which products will be in scarce supply and which in excess supply? who should appoint the head of the central bank? how much should society save? correct what goods and services will be produced?

Each state’s organizational structure is guided by the federal government.true or false?