An increasing number of North Americans regularly take vitamins daily. One resea
ID: 3320557 • Letter: A
Question
An increasing number of North Americans regularly take vitamins daily. One researcher for a vitamin company claimed that Americans take an average of 2 or more vitamin supplements daily. A random sample of 188 Americans was asked to report the number of vitamins they take daily. The appropriate hypothesis test was performed, at the 1%=alpha level to test the claim.
t-Test: Mean
Supplements
Mean
2.6702
Standard Deviation
2.5009
Observations
188
Hyothesized Mean
2
t Statistic
3.6745
P(T<=t) One-Tail
0.0002
t Critical One-Tail
2.3465
P(T<=t) Two-Tail
0.0004
t Critical Two-Tail
2.6024
Do these data allow us to infer at the 1% significance level that the researcher’s claim is true?
Do not reject the null; the researcher's claim is true; also, the p value is 0.0002.
Reject the null; the researcher's claim is not true; also, the p value is 0.0004.
Not enough information provided to make an inference about the claim.
None of the above
t-Test: Mean
Supplements
Mean
2.6702
Standard Deviation
2.5009
Observations
188
Hyothesized Mean
2
t Statistic
3.6745
P(T<=t) One-Tail
0.0002
t Critical One-Tail
2.3465
P(T<=t) Two-Tail
0.0004
t Critical Two-Tail
2.6024
Explanation / Answer
here Answer for this Q. is First ie Do not reject the null; the researcher's claim is true; also, the p value is 0.0002.
the level of significance will be 0.01 hence Calculated P-value is 0.0002
it is Less than level of sognificance ie 0.0002<0.01
hence do not Reject the Null Hypotjesis
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