psych paper 4

The National Institute of Mental Health published an article stating that in any one‐year

period, approximately 9.5 percent of American adults suffer from depression or a

depressive illness. Suppose that in a survey of 100 people in a certain town, seven of them

suffered from depression or a depressive illness. Conduct a hypothesis test to determine if

the true proportion of people in that town suffering from depression or a depressive illness

is lower than the percent in the general adult American population.

a. Is this a test of one mean or proportion?

__________________________

b. State the null and alternative hypotheses.

Ho: ____________________ Ha: ____________________

c. Is this a right‐tailed, left‐tailed, or two‐tailed test?

___________________________

d. What symbol represents the random variable for this test?

___________________________