A state meat inspector in iowa has been given

Assignment Help Basic Statistics

Reference no: EM13240719

1.-A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled “3 pounds.” Of course, he realizes that the weights cannot be precisely 3 pounds. A sample of 36 packages reveals the mean weight to be 3.01 pounds, with a standard deviation of 0.03 pounds.

2.-A recent survey of 50 executives who were laid off from their previous position revealed it took a mean of 26 weeks for them to find another position. The standard deviation of the sample was 6.2 weeks. Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.

· 46

3.-As a condition of employment, Fashion Industries applicants must pass a drug test. Of the last 220 applicants 14 failed the test. Develop a 99 percent confidence interval for the proportion of applicants that fail the test. Would it be reasonable to conclude that more than 10 percent of the applicants are now failing the test? In addition to the testing of applicants, Fashion Industries randomly tests its employees throughout the year. Last year in the 400 random tests conducted, 14 employees failed the test. Would it be reasonable to conclude that less than 5 percent of the employees are not able to pass the random drug test?

Reference no: EM13240719

Questions Cloud

Why might a driver be tempted not to use a seat belt : A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (2) One or the other ..

Find the initial speed of electrons : Two electrons are fixed 2.1 cm apart. Another electron is shot from infinity and comes to rest midway between the two. What was its initial speed

You are a researcher who conducted a study of soft-drink : You are a researcher who conducted a study of soft-drink preferences among residents in a test market prior to an advertising campaign for a new cola product. Of the participants, 130 are teenagers and 130 are adults.

Enlightment ideal shaped the political : Description one way in which enlightment ideal shaped the political, ecnomic or social instution of the United States

A state meat inspector in iowa has been given : A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled “3 pounds.” Of course, he realizes that the weights cannot be precisely 3 pounds. A sample of 36 packages reveals the m..

What should the reading on the right scale : A scaffold that weighs 275N supports two painters, one weighing 150N and the other weighing 325N, What should the reading on the right scale be

Trainer is the second president of egypt : I'm thinking that the trainer is the second president of Egypt, Abd al-Nasser and the tiger is any "ignorant" Egyptian under his rule. I'm not really sure who the pupils are. Tamer is stating that Egypt was fine before the "revolution" and that Nasse..

A sample of 25 concession stand purchases at the may 12 : A sample of 25 concession stand purchases at the May 12 matinee of Spider-Man 3 showed a mean purchase of $ 7.29 with a standard deviation of $ 3.02. For the May 18 evening showing of the same movie.

Find the energy density in the electric field : What is the energy density in the electric field at the surface of a 2.90-cm-diameter sphere charged to a potential of 1000V

User Account

All Pages