Identify the null and alternative hypotheses for the following problems
a. The manager of a restaurant believes that it takes a customer less than or equal to 25 minutes to eat lunch.
b. Economists have stated that the marginal propensity to consume is at least 90¢ out of every dollar.
c. It has been stated that 75 out of every 100 people who go to the movies on Saturday night buy popcorn.
a. H0: ? ? 25
Ha: ? > 25
b. H0: p ? 0.9
Ha: p < 0.9
c. H0: p = 0.75
Ha: p ? 0.75
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