# Question: An employee survey conducted two years ago by Rice Motors

An employee survey conducted two years ago by Rice Motors, Inc., found that 53% of its employees were concerned about future health care benefits. A random sample of 80 of these employees were asked if they were now concerned about future health care benefits. Answer the following, assuming that there has been no change in the level of concern about health care benefits compared to the survey two years ago.

a. What is the standard error of the sample proportion who are concerned?

b. What is the probability that the sample proportion is less than 0.5?

c. What is the upper limit of the sample proportion such that only 3% of the time the sample proportion would exceed this value?

a. What is the standard error of the sample proportion who are concerned?

b. What is the probability that the sample proportion is less than 0.5?

c. What is the upper limit of the sample proportion such that only 3% of the time the sample proportion would exceed this value?

**View Solution:**## Answer to relevant Questions

The annual percentage salary increases for the chief executive officers of all midsize corporations are normally distributed with mean 12.2% and standard deviation 3.6%. A random sample of 81 of these chief executive ...A process produces batches of a chemical whose impurity concentrations follow a normal distribution with a variance of 1.75. A random sample of 20 of these batches is chosen. Find the probability that the sample variance ...A production process manufactures electronic components with timing signals whose duration follows a normal distribution. A random sample of six components was taken, and the durations of their timing signals were ...An investor is considering six different money market funds. The average number of days to maturity for each of these funds is as follows: 41, 39, 35, 35, 33, 38 Two of these funds are to be chosen at random. a. How many ...Plastic bags used for packaging produce are manufactured so that the breaking strengths of the bags are normally distributed with a standard deviation of 1.8 pounds per square inch. A random sample of 16 bags is selected. a. ...Post your question