In last year's survey of travel management professionals, it was found that the lowest salary was $30,000 and the highest salary was $90,000. a) A new survey is being planned this year. Use the above information to determine how large a sample would need to be to estimate the mean salary of travel management professionals to within $5,000 with 90% confidence.
b) Suppose the standard deviation of the travel management professionals' salaries in the old survey was $20,000. Use this new information and recalculate the sample size asked for in art (a).
c) Which of the above two sample sizes would you use for the new survey this year and why?

Step-by-step explanation:

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.

the most boring thing ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.