1. What does it mean if we say that our hypothesis test has a one-sided (or, as it's sometimes called, one-tailed) alternative hypothesis?

2. How is a two-sided alternative hypothesis different from a one-sided alternative hypothesis?

Use the following scenario to conduct a hypothesis test and to answer Questions 3 through 9. you will need access to Table B so you can figure out the P-value in order to reach an appropriate conclusion.

It has been claimed that the proportion of adults who are afraid to ask their doctor about a health condition or symptoms they are experiencing is 0.51. A researcher has some reason to doubt this claim. The researcher does not know if the true population proportion is larger than or smaller than 0.51; instead, the researcher just thinks the true population proportion is different from 0.51. The researcher surveys a random sample of 850 adults and finds that 408 of these adults say they are afraid to ask their doctor about health conditions or symptoms they are experiencing. Use this information to conduct a hypothesis test at a significance (or alpha) level of 0.05.

3. What will the hypotheses be?

Ho: Ha:

4. Recall that 408 out of 850 surveyed adults said they are afraid to ask their doctor about health conditions or symptoms. What then is the sample proportion? Calculate this value below.

5. What is the test statistic? Calculate this value below, using the given formula.