A professor wants to know how many adults in America have a driving license. He

Question

A professor wants to know how many adults in America have a driving license. He reads an article saying that 78% of Americans possess a driving license, but he's not so sure of that. The professor has good theoretical reasons to think it should be more than 78%. What are the professor's null hypothesis and his alternative hypothesis? (Select two answers.)

a) H0: The (population) proportion of American adults that possess a driving license equals zero.

b) Ha: The (population) proportion of American adults that possess a driving license is higher than 0.78.

c) H0: The (population) proportion of American adults that possess a driving license equals 0.78.

d) Ha: The (population) proportion of American adults that possess a driving license does not equal 0.78.

Explanation / Answer

The professor thinks it should be more than 78%.

Null hypothesis is the equation of equality thus answer C is correct

also alternate hypothesis is what professor thinks is true. so option B

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