Question

1.

Fortune publishes data on sales, profits, assets, stockholders' equity, market value, and earnings per share for the 500 largest U.S. industrial corporations every year. Assume that you want to select a simple random sample of 10 corporations from the Fortune 500 list. Use the last three digits in column 6 of the table of random numbers, beginning with 714. Read down the column and identify the numbers of the 10 corporations that would be selected. (Enter your answers as a comma-separated list.)

2.

A sample of 5 months of sales data provided the following information.

Month	1	2	3	4	5
Units Sold	96	95	88	93	88

(a)

Develop a point estimate of the population mean number of units sold per month.

(b)

Develop a point estimate of the population standard deviation. (Round your answer to two decimal places.)

3.

One of the questions on a survey asked adults a series of questions on attitudes toward automation. The results showed that 2,976 out of 4,135 respondents are worried about a future in which robots and computers can do many human jobs; 2,771 are worried about the development of algorithms that can evaluate and hire job candidates; and 2,234 are worried about the development of driverless vehicles. (Round your answers to four decimal places.)

(a)

Develop a point estimate of the proportion of respondents who are worried about a future in which robots and computer can do many human jobs.

(b)

Develop a point estimate of the proportion of respondents who are worried that the development of algorithms that can evaluate and hire job candidates.

(c)

Develop a point estimate of the proportion of respondents who are worried about the development of driverless vehicles.

Answer 1

1. from the given data,

2.

3

a)2976/4135=0.7197

b)2771/4135=0.6701

c)2234/4135=0.5403