Statistics

posted by .

Comcast wants to know the percent of their cable subscribers who use the internet at home. How large of a sample size should they survey to determine the proportion who use the internet within 2% and with 90% confidence interval.

Please show formula when computing sample size.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    You are a travel agent and wish to estimate, with 98% confidence, the proportion of vacationers who use an online service or the Internet to make travel reservations. Your estimate must be accurate within 4% of the population proportion. …
  2. Statistics

    Find the minimum sample size that should be chosen to assure that the proportion estimate p will be within the required margin of error, .06. Use a 95% confidence interval and a population proportion of .7. The critical value for a …
  3. statistics

    A sample of 352 subscribers to Wired magazine shows the mean time spent using the Internet is 13.4 hours per week, with a sample standard deviation of 6.8 hours. Find the 95 percent confidence interval for the mean time Wired subscribers …
  4. Elementary Statistics

    1) Construct a confidence interval of the population proportion at the given level of confidence. x=60,n=300, 99% confidence. The 99% confidence interval is (_,_) 2) A researcher wishes to estimate the proportion of adults who have …
  5. Statistics

    A survey of 815 students is asked whether or not they have cable TV and Internet cable in their rooms at home. Results of the survey showed that 69% of students has cable TV, 58% of students has Internet cable and 37% of students has …
  6. statistics

    A researcher wishes to estimate with 95% confidence the proportion of adults who have high speed internet access. Her estimate must be accurate within 4% of the true proportion. 1. Find the minimum sample size needed using a prior …
  7. statistics

    Please help- A random sample of n=500 households where 150 have combined cable,phone, and internet service. Firrst, calculate p-hat, the sample proportion of households having such service. Then use a confidence level for pi, the proportion …
  8. statistics

    Dylan wants to determine a 90 percent confidence interval for the true proportion of high school students in the area who attend their home basketball games. How large of a sample must he have to get a margin of error less than 0.03?
  9. Math (Statistics: Test Statistic, Proportion)

    The Pew Research Center Internet Project, conducted on the 25th anniversary of the Internet, involved a survey of 857 Internet users (Pew Research Center website, April 1, 2014). It provided a variety of statistics on Internet users. …
  10. STATISTIC

    A survey of Internet users reported that 21% downloaded music onto their computers. The filing of lawsuits by the recording industry may be a reason why this percent has decreased from the estimate of 31% from a survey taken two years …

More Similar Questions