2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed. a) Determine the null and alternative hypotheses. H0H0: p=p= HaHa: pp Select an answer > < not =   (Put in the correct symbol and value) b) Determine the test statistic. Round to two decimals. z=z= c) Find the p-value. Round to 4 decimals. P-value =  d) Make a decision. Reject the null hypothesis Fail to reject the null hypothesis

MATLAB: An Introduction with Applications
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In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed.

a) Determine the null and alternative hypotheses.

H0H0: p=p=

HaHa: pp Select an answer > < not =   (Put in the correct symbol and value)

b) Determine the test statistic. Round to two decimals.

z=z=

c) Find the p-value. Round to 4 decimals.

P-value = 

d) Make a decision.

  • Reject the null hypothesis
  • Fail to reject the null hypothesis



e) Write the conclusion.

  • There is sufficient evidence to support the claim that the percentage of college students who work is different than 71%.
  • There is not sufficient evidence to support the claim that the percentage of college students who work is different than 71%.
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