Mathematics, 13.06.2020 05:57 alexussaniyah

A direct mail appeal for contributions from a university's alumni is considered effective if more than 15% of the alumni provide monetary contributions. To determine if a direct mail appeal is cost effective, the fundraising director sends the direct mail brochure to a simple random sample of 250 people on the alumni mailing list. He receives monetary contributions form 40 people. Which of the follow alternative hypothesis statements is correct ? Group of answer choices Ha: p > 0.15 Ha: phat > 0.15 Ha: phat > 0.16 Ha: p < 0.16

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A direct mail appeal for contributions from a university's alumni is considered effective if more th...