It is said that healthy and happy workers are efficient and productive. A
company that manufactures exercising machines wanted to know the
percentage of large companies that provided on-site health club facilities.
A sample of 240 companies showed that 96 of them provide such
facilities on site.

A. What is the point estimate of the percentage of all such companies
that provide such facilities on site?

B. Construct a 97% confidence interval for the percentages of all such
companies that provide such facilities on site.

  1. 👍
  2. 👎
  3. 👁
  1. A) Point of estimate = phat = 96/240 = 0.4
    za/2 = (1-.97)/2 = 0.015
    z0.015 = 2.17
    Sdv = sqrt(p*q/n) = 0.0316

    0.4 -+ 2.17* 0.0316

    [0.3314, 0.4686] or 33.14% to 46.86%

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Statistics

    A company manufactures calculators in batches of 64 and there is a 4% rate of defects. Find the probability of getting exactly three defects in a batch.

  2. calculus

    A company manufactures and sells x cellphones per week. The weekly price-demand and cost equations are given below P=400-.5x and C(x)=20000+130x What price should the company charge for the phones and how many phones should be

  3. statistics

    a company manufactures batteries in batches of 18 and there is a 3% defect rate. Find the standard deviation for a number of defects per batch?

  4. Algebra 2

    A company manufactures bicycles in 8 different styles. Each style comes in 7 different colors. How many different bicycles does the company make?

  1. History

    5.)what was the main benefit of the factory system? A.)it cut cost's and made workers more efficient *** B.)it gave people their first chance too support themselves C.)it reduced pollution caused by family-based power sources

  2. Probability and Statistics

    An oil prospector will drill a succession of holes in a given area to find a productive well. The probability that he is successful on a given trial is 0.2. a) What's the probability that that the third hole drilled is the first

  3. Geography

    Textile mills in America and Europe became more efficient due to advancements in machinery such as the Spinning Jenny and power loom. What resulted from the technology advancements in the textile industry? Women and children never

  4. finance

    An increasing average collection period indicates 1)the firm is generating more income. 2) accounts receivable are going down. 3) the company is becoming more efficient in its collection policy. 4) the company is becoming less

  1. civics

    The federal government wants more people to buy hybrid or electric cars. Currently, they are more expensive than cars fueled by gas or diesel. In a market or mixed economy, what might the government do to benefit the car

  2. Precalculus

    Records from the buzz sawmill show that workers have 0.03 probability of losing a leg and a 0.04 probability of losing an arm in any one year. Armand leg casualty insurance company plans to offer insurance policies for the

  3. Grade 11 Functions

    A small company manufactures a total of x products per week. The production cost is modelled by the function y=50 + 3x. The revenue is given by the function 6x - x^2/100. How many items per week should be manufactured to maximize

  4. Math (HELP me Mrs.Sue)

    which of the following statements best describes a healthy diet? A healthy diet consist of foods that are consistently from the same food group A healthy diet consist of only organic compounds and nutrients A healthy diet consist

You can view more similar questions or ask a new question.