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A card company claims that 80% of all American college students send a card to their...

A card company claims that 80% of all American college students send a card to their mother on Mother’s Day. Suppose you plan to gather your own data to test this claim, wondering if your sample proportion will differ in either direction from the proportion claimed by the card company. You select a random sample of 53 American college students and find that 37 of them send a card to their mother on Mother’s Day. Do you have enough evidence to reject the card company’s claim?

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No, because your z of one-sample proportion test statistic is -1.8 and that is less extreme than the critical value of .05.

Yes, because you found that only 70% of your sample sent cards, and that result is less than the card company’s claim of 80%.

No, because your z of one-sample proportion test statistic is -1.8 and that is less extreme than the critical value of -1.96.

Yes, because your z of one-sample proportion test statistic is -1.8 and that is more extreme than the critical value of -1.645.

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