Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Statistics and Probability Expert

A study of 420039 cell phone users found that 131 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0225% for those not using cell phones. A: use the sample data to construct a 95% confidence interval estimate of the percentage of the cell phone users who develop cancer of the brain or nervous system.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91001740

Have any Question?


Related Questions in Statistics and Probability

Suppose that a certain college class contains 55 students

Suppose that a certain college class contains 55 students. Of these, 31 are sophomores, 28 are history majors, and 6 are neither. A student is selected at random from the class. (a) What is the probability that the stude ...

A laboratory worker finds that the 3 of his blood samples

A laboratory worker finds that the 3% of his blood samples test positive for the HIV virus. In a random sample of 70 blood tests, what is the mean number that test positive for the HIV virus? (Round your answer to 1 deci ...

Lets assume that your tuition not including books and

Let's assume that your tuition (not including books and supplies) for this semester is $7500. If you are taking 5 courses, and each class meets 3 hours a week, what are you paying per hour for your classes? (A typical co ...

Would you actually build a contingency chart for this

Would you actually build a contingency chart for this question or is this just probability basics? Bob sets two battery powered alarm clocks to make sure he wakes up in time for his 8 AM accounting test. Each alarm clock ...

If material hardness is normally distributed with a mean of

If material hardness is normally distributed with a mean of 42 and a standard deviation of 1. Specification limits for hardness are from 35 to 45. When the fraction defective is 0.0017 what is the corresponding PPM?

A travel analyst claims that the mean room rates at a

A travel analyst claims that the mean room rates at a three-star hotel in Chicago is greater than $152. In a random sample of 36 three-star hotel rooms in Chicago, the mean room rate is $165 with a standard deviation of ...

A national air traffic control system handled an average of

A national air traffic control system handled an average of 47,556 flights during 28 randomly selected days in a recent year. The standard deviation for this sample is 6,251 flights per day. Complete parts a through c be ...

The table shows the results of a survey in which 400 adults

The table shows the results of a survey in which 400 adults from the? East, 400 adults from the? South, 400 adults from the? Midwest, and 400 adults from the West were asked if traffic congestion is a serious problem. Co ...

A shipment of 11 televisions sets contains 4 defective sets

A shipment of 11 televisions sets contains 4 defective sets. A hotel purchases 7 of these televisions sets. a: In how many ways can a hotel purchase 7 and receive 2 of the defective sets? b: What is the probability that ...

There are twenty stores for a grocery chain in the

There are twenty stores for a grocery chain in the Mid-Atlantic region. The regional executive wants to visit five of the twenty stores. She asks her assistant to choose five stores and arrange the visit schedule. (Pleas ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As