6.52 What's wrong? Here are several situations where there is an incorrect application of the ideas presented in this section. Explain what is wrong in each situation and why it is wrong.
- (a) A researcher tests the following null hypothesis: H0: = 23.
- (b) A random sample of size 30 is taken from a population that is assumed to have a standard deviation of 5. The standard deviation of the sample mean is 5/30.
- (c) A study with = 45 reports statistical significance for Ha: μ > 50.
- (d) A researcher tests the hypothesis H0: μ = 350 and concludes that the population mean is equal to 350.
1. The parameter in the hypothesis is missing. 2. The formula for the standard... View the full answer