3 Jim works in the admission office of a major state univers

3. Jim works in the admission office of a major state university in the east coast. He reports that of the 37000 undergraduates who attend this unversity, 47% are male. He then sends an email to every 10th senior and asks them if they plan to go to graduate school and he finds the percentage to be 23%.

What is the best answer?

Select one:

a. 47% is a prameter and 23% is a statistic.-

b. 47% and 23% are both statistics.

c. 47% is a statistic and 23% is a parameter.

d. 47% and 23% are both parameters.

4.

A tennis player makes a successful first serve 55% of the time. If she serves 5 times, what is the probability that she gets all her first serves in? Assume that each serve is independent of the others.

Solution

1) D

2) given she make succesful first serve 55%

then probability that she makes first serve successful is 0.55

then ;probabbilty that she gets all her her first serves in =0.55*0.55*0.55*0.55*0.55=0.05032