Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 664 randomly selected adults showed that $45 \%$ of them would erase all of their personal information online if they could. Complete parts (a) and (b) below.
b. Identify the null and alternative hypotheses.
Answer
The null hypothesis is that the proportion of adults who would erase all of their personal information online if they could is equal to 0.5 (or 50%). The alternative hypothesis is that the proportion of adults who would erase all of their personal information online if they could is less than 0.5 (or 50%).
Step 1 ：The null hypothesis is that the proportion of adults who would erase all of their personal information online if they could is equal to 0.5 (or 50%). The alternative hypothesis is that the proportion of adults who would erase all of their personal information online if they could is less than 0.5 (or 50%).
