dalily dietary allowance for zinc among males older than age 50 years is 15 mg/d

Question

dalily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65-74 years: n 119, x - 11.6, and s- 6.47. Does this data indicate that average daily zinc intake in the population of all males age 65-74 falls below the ed allowance? (Use a 0.os.) State the appropriate null and alternative hypotheses Ha: s 15 Ho: -15 Ha: > 15 : 15 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P.value to four decimal places.) z- 5.73 P-value 0.0006 context Do not reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day. Reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day Do not reject the null hypothesis. There is sufficient evidence that average daily zinc intake falls below 15 mg/day

Explanation / Answer

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From normal standard table

P(z< -5.73)=1-p(z<5.73) (from normal standard z table)

=1-1

=0.0000

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