Question

Prior to an intensive TV advertising campaign, the producers of Nike athletic
shoes find that 29 of a random sample of 200 upper-income adults are aware
of their new leisure shoe line. A second random sample of 300 such adults is
taken after the campaign. Now 96 of the persons sampled can identify the
new line.
Is the increase in the proportion of upper income adults showing brand
awareness significant? Test the claim using alpha = .05.

Identify
- null & alternative hypotheses
- calculate test statistic & p-value using significance level .05
- clearly state why test stat. is statistically significant or not
- do we reject of fail to reject null hypothesis?
- state conclusion in non technical terms addressing practical significance and statistical significance

Answer 1