A simple random sample is conducted of 1486 young adults who were once college students seeking bachelor’s degrees at a specific university. The study found that 780 of these young adults actually earned bachelor’s degrees. Use a 0.05 significance level to test the claim that a majority of the students at this university earn bachelor’s degrees. State the following

Null and alternative hypotheses:

Left -, right- or two tail test:

Test statistic

Critical value (s) (and draw the rejection region)
State rejection region:

P-value (draw this area, too)

Decision to reject/ fail to reject the null hypothesis (based on both tests)

Fully state your conclusion (in the context of the problem)

Of 99 adults selected randomly from one town, 63 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. Show all work. (Round confidence interval limits to three decimal positions)

Confidence: ___________<p<________________

  1. 👍 0
  2. 👎 0
  3. 👁 39
asked by Giselle

Respond to this Question

First Name

Your Response

Similar Questions

  1. statistics

    A nationwide study indicated that 27% of adults said that chocolate was their favorite ice cream flavor. A simple random sample of 150 adults is obtained. A.) Describe the sampling distribtuion of p, the sample proportion of

    asked by Megan on November 11, 2011
  2. statistics

    Professor Smith conducted a class exercise in which students ran a computer program to generate random samples from a population that had a mean of 50 and a standard deviation of 9mm. Each of Smith's students took a random sample

    asked by lauren on February 16, 2008
  3. Biostatitics

    Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database, an estimate of the percentage of adults who indicated to have at some point of their life been

    asked by ayo on February 1, 2016
  4. statistics

    A student government representative at a local university claims that 60% of all the undergraduate students favor a move to Division I in college football. A simple random sample of 250 undergraduate students is selected. What is

    asked by LO on February 21, 2015
  5. Probability and Statistics

    The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere

    asked by Katy on November 28, 2013
  6. statistics

    In the past a certain college has found that 35% of the students will grad within 4 years. A random sample of 450 students at this college is taken and going to be followed until graduation. A. What is the sampling distribution of

    asked by danny on June 13, 2011
  7. STAT

    A college faculty consists of 400 men and 250 women. The college administration wants to draw a sample of 65 faculty members to ask their opinion about a new parking fee. They draw a simple random sample of 40 men and another

    asked by CEDRA on June 11, 2014
  8. Statistics

    You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers

    asked by debbie on May 1, 2014
  9. math

    random sample of 9600 students. Multistage design effect similar to an SRS (for those still in school) 46% had at least one parent who was a college graduate. Estimate with 99% confidence the proportion of all students who had at

    asked by Please Help on April 3, 2013
  10. Statistics

    According to one survey, the mean serum cholesterol level for U.S. adults was 195.1, with a standard deviation of 41.5. A simple random sample of 95 adults is chosen. Find the 46 percentile for the sample mean. Write only a number

    asked by Tommy on October 6, 2015

More Similar Questions