On a street in Manhattan a man (apparently) using crutches dropped his newspaper and had obvious difficulty picking it up. An observer recorded whether a person passing the man was (a) on a cellphone, and (b) whether or not the person retrieved the man's newspaper for him. Over the course of a week, this scenario was repeated many times. Of the 48 people who were on a cellphone, 19 retrieved the newspaper. Of the 205 people who were not on a cellphone, 134 retrieved the newspaper.

(a) Give a null and a two-sided alternative hypothesis in this case. Describe the two parameters of interest as best you can.

(b) What are the explanatory andthe response variables in this case?

(c) Build a contingency table for these data with the rows being the categories for the response variable.

(d) find the appropriate sample percentages and summarize your results.

(e) find the p-value in this case.

(f) Can you reject the null hypothesis at the 5% level of significance? Can you reject the null hypothesis at the 1% level of significance?