In 1974, 27% of American adults were found to weigh more than their
desired weight range. A survey of 948 adults in the year 2000 showed
that 312 adults weighed more than their desired weight range. Does the
data provided show evidence that American adults are weighing more in
2000? Use a significance level of 5%.
Statistics Homework Solutions
#6365
Am I using the right formula?
I'm not sure if I'm using the correct formula for this problem.
It's a hypothesis testing problem so I need to do all the steps. Here is what I put.
Ho: mu<.27 Ha: mu ->.27
I used z=p-hat-P/p((1-p)/n) the denominator square rooted.
So my answer was 6.396.
I just don't think I'm using the right formula. Any help would be great.
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