Question

A dietary assessment was performed on 51 boys 9 to 11 years of age whose families were below poverty level. The mean daily iron intake among these boys was found to be 12.50 mg with standard deviation 4.75 mg. Suppose the mean daily iron intake among a large population of 9 to 11 year old boys from all income strata is 14.44 mg.
a. Conduct a 5 step significance test with alpha = .01 of whether the mean iron intake among the low income group is significantly lower from that of general population.
b.explain what the p value means within the context of the problem.
c. Draw and label the distribution. Include the test statistic and the rejection (critical) region.

Answer 1

the P value here if the mean iron intake of low income group is assumed as 14.44 then the probability of happening of the test statistic.