# 2. A new chemotherapy drug is released to treat leukemia and researchers

suspect that the drug may have fewer side effects than the most commonly used drug to treat leukemia. The two drugs have equivalent efficacy. In order to determine if a larger study should be conducted to look into the prevalence of side effects for the two drugs, set up a Mann-Whitney U test at the alpha equals .05 level and interpret its results.

Number of Reported Side-Effects

Old Drug 0 1 3 3 5

New Drug 0 0 1 2 4

Old Drug

New Drug

Total Sample

(Ordered Smallest to Largest)

Ranks

Old Drug

New Drug

Old Drug

New Drug

A) We fail to reject H0, which states the two populations are equal at the alpha equals .05 level because the calculated U value of 16.5 is greater than the critical U value of 2.

B) We fail to reject H0, which states the two populations are equal at the alpha equals .05 level because the calculated U value of 8.5 is greater than the critical U value of 2.

C) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05 level because the calculated U value of 16.5 is greater than the critical U value of 2.

D) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05 level because the calculated U value of 8.5 is greater than the critical U value of 2.

usce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipisc*x*congue vel laoreet ac, dictum vitae odio.*x*pulvinar t**acinia pulvi**

or nec facilisis. Pellen

ec fac$tltoti,x,,,tec facgue vs_{t_{l}}olox,x_{i}x$ec facl

ng elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus an