USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey asked people if they had ever sent a love letter using e-mail. Suppose that this survey used a random sample of adults and 205 stated that they had written a love letter using e-mail. Is this evidence that more than 20% of American adults have written a love letter using e-mail? Use a level of significance of 5%. a) : _________________ (3 decimal places) b) Complete the following areas. Label the critical value and test statistic on the curve and shade the rejection region(s). H0: __________________ H1: __________________ Type of Test: ________________ Test Statistic: _________________ (2 decimal places) Critical Value(s): ________________ (2 decimal places) P-Value: __________________ (4 decimal places) Reject or Fail to Reject: ______________________ Conclusion (express in a sentence in the context of the problem)
USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey
asked people if they had ever sent a love letter using e-mail. Suppose that this survey used a random sample
of adults and 205 stated that they had written a love letter using e-mail. Is this evidence that more than 20%
of American adults have written a love letter using e-mail? Use a level of significance of 5%.
a) : _________________ (3 decimal places)
b) Complete the following areas. Label the critical value and test statistic on the curve and shade
the rejection region(s).
H0: __________________
H1: __________________
Type of Test: ________________
Test Statistic: _________________ (2 decimal places)
Critical Value(s): ________________ (2 decimal places)
P-Value: __________________ (4 decimal places)
Reject or Fail to Reject: ______________________
Conclusion (express in a sentence in the context of the problem)
______________________________________________________
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