Answer Happy

The recommended daily 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 = 117, x = 12.9, and s = 6.77. Does
this data indicate that average daily zinc intake in the population
of all males age 65−74 falls below the recommended allowance?
(Use 𝛼 = 0.05.)
State the appropriate null and alternative hypotheses.
H0: 𝜇 = 15
Ha: 𝜇 >
15H0: 𝜇 = 15
Ha: 𝜇 ≠ 15 H0: 𝜇 =
15
Ha: 𝜇 ≤ 15H0: 𝜇 =
15
Ha: 𝜇 < 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.)
State the conclusion in the problem 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. Reject the null hypothesis. There is
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.