Question

A study is conducted to see if teenagers drive at faster average speeds than the general population of drivers. The average speed of the driving population is 35 mph. The null hypothesis is H 0: μaverage driving speed of teenagers = 35 mph. What is the alternative hypothesis?

Answer 1

Alternative Hypothesis-

H: Teenagers' driving speed > 35 mph

Solution:

As per the question:

The purpose of the study is to check that whether the teenagers drive at average speed faster than the general drivers' population.

The mean or average of the population that drives is 35 mph.

Thus

Mean,
`\mu = 35\ mph`

The null hypothesis as per the question:

`H_(o) = Average\ driving\ speed\ of\ the\ teenager\ is\ 35\ mph`

Thus, the alternative hypothesis in order to check teenagers drive at faster average speed than the general population is given as:

H: The average driving speed of the teenagers is higher than 35 mph.