Question

If an experimenter sets equal to .01, then she is defining a "statistically rare" event as an event occurring more than one time in 100 if the alternative hypothesis is true. an event occurring more than one time in 100 if the null hypothesis is true. an event occurring five or fewer times in 100 times if the null hypothesis is true. an event occurring one or fewer times in 100 times if the null hypothesis is true.

Answer 1

The correct answer is an event occurring one or fewer times in 100 times if the null hypothesis is true.

Explanation:

For a statistically rare event, its probability is relatively small and the event is very unlikely to occur. Therefore, if an experimental sets equal to 0.01 which is statistically rare, then we can interpret this mathematically as:

p(event) = 0.01 = 1/100

where p(event) is the probability of the event.

In addition, statistically, null hypothesis signifies no major difference between the specified parameters, and any obvious difference that might occur as a result of experimental error. Thus, it can be concluded that the event is occurring one or fewer times in 100 times if the null hypothesis is true.