STAT 200: Introduction to Statistics
Final Examination, Fall 2016 OL3
Page 1 of 8
STAT 200 OL3 Sections Final
Exam Fall 2016
The final exam will be posted at 12:01 am on November 25, and it is
due at 11:59 pm on November 27, 2016. Eastern Time is our
refe
1. X denotes # of win in n=6 independent caps where each has a probability p=.2
This is denoted by X~Binomial (n=6, p=.2)
P(X1), n=6, p=.2
P(X1)=1-p(x<)
P(X<1)=P(0X<1)=P(X=0)
P(X=0)=(.2)0(1-.2)6=1(.2)0(.8)6=.262144
P(X=0)=.262144=.262
P(X<1)=.262
P(X1)=1-
1.
Z test
Reason: Average amount of cobalamine should be considered and the population standard deviation is
known.
2.
Let
be the average amount of cobalamine teens are getting daily.
Null hypothesis:
H 0 : 2.4
Alternative hypothesis:
H 1 : <2.4
"tailedn
78. Conduct a goodness-of-fit test to determine if the actual college majors of graduating males fit the
distribution of their expected majors. Major Men - Expected Major Men - Actual Major Arts &
Humanities 11.0% 600 Biological Sciences 6.7% 330 Business
1. (5 points) A soda company want to stimulate sales in this economic climate by giving customers a
chance to win a small prize for ever bottle of soda they buy. There is a 30% chance that a customer will
find a winning icon at the bottom of the cap upon
102. The American Community Survey (ACS), part of the United States Census Bureau, conducts a yearly
census similar to the one taken every ten years, but with a smaller percentage of participants. The most
recent survey estimates with 90% confidence that
Use the following information to answer the next four exercises: Ellen has music practice three days a
week. She practices for all of the three days 85% of the time, two days 8% of the time, one day 4% of the
time, and no days 3% of the time. One week is
Use the following information to answer the next three exercises: Richards Furniture Company delivers
furniture from 10 A.M. to 2 P.M. continuously and uniformly. We are interested in how long (in hours)
past the 10 A.M. start time that individuals wait f
Use the following information to answer the next ten exercises. A customer service representative must
spend different amounts of time with each customer to resolve various concerns. The amount of time
spent with each customer can be modeled by the follow
1. A poll of 400 people from Dobbs Ferry showed 250 preferred chocolate raspberry coffee
while 170 out of 350 in Irvington preferred the same flavor. To test the hypothesis that
there is no difference in preferences in the two villages, what is the altern