Herr Foods, a producer of a variety of salty snacks, would like to estimate the average weight of a bag of BBQ potato chips produced during the filling process at its Nottingham, Pennsylvania, plant. Determine the sample size needed to construct a 95% confidence interval with a margin of error equal to 0.005 ounces. Assume the standard deviation for the potato chip filling process is 0.02 ounces. Verify your result using PHStat.
Answer to relevant QuestionsThe state of New Jersey would like to estimate the proportion of voters who intend to participate in the upcoming statewide elections. A pilot sample of 50 voters found that 36 of them intended to vote in the election. ...Construct a 99% confidence interval to estimate the population mean using the following data: x = 22 σ = 4.5 n = 20 N = 180 One provision of the Affordable Care Act, commonly known as Obamacare, requires insurance plans pay for breast feeding support for mothers, such as consultations and breast pumps. According to the CDC, 48% of mothers were ...To design a new advertising campaign, Volkswagen would like to estimate the proportion of drivers of the new VW Beetle who are women. In a random sample of 250 Beetle owners, 140 of them were women. a. Construct a 95% ...Using a 90% confidence level, the U. S. Department of Labor would like to estimate the average weekly hours worked by private employees in the United States who are adults. Assume the standard deviation for the number of ...
Post your question