The recommended daily dietary allowance for zinc among males older than age 50 y
ID: 3293671 • Letter: T
Question
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 6574 years: n = 112, x = 11.2, and s = 6.67. Does this data indicate that average daily zinc intake in the population of all males age 6574 falls below the recommended allowance? (Use = 0.05.)
State the appropriate null and alternative hypotheses.
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.)
Explanation / Answer
The statistical software output for this problem is:
One sample T summary hypothesis test:
: Mean of population
H0 : = 15
HA : < 15
Hypothesis test results:
Hence,
Null and alternative hypotheses:
H0 : = 15
HA : < 15
Test statistic = -6.03
P - Value = 0.0000
Mean Sample Mean Std. Err. DF T-Stat P-value 11.2 0.63025576 111 -6.0292983 <0.0001Related Questions
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