A company reports that 80% of its employees participate in the company’s stock purchase plan. A random sample of 50 employees was asked the
question, "Do you participate in the stock purchase plan?" The answers are shown
below. yes no no yes no no yes yes no no
no yes yes yes no yes no no yes yes
no yes yes no yes yes no yes yes yes
yes no no yes yes yes yes yes no yes
no yes yes no yes yes yes yes yes yes
Perform the appropriate test of hypothesis to investigate your suspicion that fewer
than 80% of the company's employees participate in the plan. Use α = .05.
Check the validity of the test assumptions:
Hypothesis H0: H1:
Test Statistic:
Critical Region and Critical Values (draw the picture)
Decision: Reject H0 Fail to Reject H0
Conclusion: