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A television network decides to cancel one of its shows if it is convinced that less than 14% of the viewing public are watching this show.
a. If a random sample of 1500 households with televisions is selected, what sample proportion values will lead to this show's cancellation, assuming a 5% significance level?
b. What is the probability that this show will be cancelled if 13.4% of all viewing households are watching it? That is, what is the probability that a sample will lead to rejection of the null hypothesis?
You can assume that 13.4% is the population proportion (even though it wouldn't be known to the network).
The article "Improved Bioequivalence Assessment of Topical Dermatological Drug Products Using Dermato pharmacokinetics" (B. N'Dri-Stempfer, W. Navidi, et al., Pharmaceutical Research, 2009:316-328) describes a study in which a new type of ointment..
Assuming that the distribution of the costs is normal, what is the probability that the average for this sample is between $400 and $425?
1.an experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield.
Utilize a test of the difference among proportions when answering these questions. Illustrate the research hypothesis.
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