Drug Companies and Research Studies. Use this information for Exercises 73–75. The Annals of Internal Medicine reported that 39 of the 40 research studies with acknowledged sponsorship by a drug company had outcomes favoring the drug under investigation.20
73. If appropriate, construct and interpret a 90% confidence interval for the population proportion of all studies sponsored by drug companies that have outcomes favoring the drug. If not appropriate, clearly state why not.
8.3.73
We have but . Thus we cannot use the interval for .