a) The Ludlow Wildcats baseball team, a minor league team in the Cleveland Indians organization, plays 70 percent of their games at night and 30 percent during the day. The team wins 50 percent of their night games and 90 percent of their day games. According to today's newspaper, they won yesterday. What is the probability the game was played at night?

% of games played at night = 70%
% of games played during day = 30%
% of night games won =50%
% of day games won= 90%

Probability of winning
= Probability of winning at night + Probability of winning during day = % of games played at night x % of night games won + % of games played during day x % of day games won = 70% x 50% + 30% x 90%

= 0.35 + 0.27 = 0.62

Probability that the game was played during night given that the game was won = Probability of winning at night / Probability of winning = 0.35 / 0.62 = 35/62
Answer: Probability = 35/62

This can be understood in a different way
Let the number of games played be 100
Out of these 100 games, 70 games were played at night and 30 during day Out of 70 games played at night no of games won = 50% x 70 = 35 games and the number of games lost = 50% x 70 =35 Out of 30 games played during day, no of games won = 90% x 30 = 27 games and the number of games lost = 10% x 30 = 3 Thus total games won = 35 + 27 = 62

(Total games lost = 35 + 3 =38, but this is not required for calculation)

Thus out of 62 games won , 35 were won at night
Thus probability that the game was played at night, given that the game was won = 35/62

b) With each purchase of a large pizza at Tony's Pizza, the customer receives a coupon that can be scratched to see if a prize will be awarded. The odds of winning a free soft drink are 1 in 10, and the odds of winning a free large pizza are 1 in 50. You plan to eat lunch tomorrow at Tony's. What is the probability: 1. That you will win either a large...

...Week Four Team Paper
xxxxxxxxxxxxxx
QNT/561
August 1, 2012
xxxxxxxxx
Week 4 Team Paper
Best Buy is a company that has 40 years of history with a very accomplished sense of success. In 1966 Best Buy was a small electronics store in that originated in St. Paul Minnesota by Richard Schulze and an acquainted business partner. Considering that technology changes so rapidly, Best Buy has had to...

...could happen.
If it were zero, what would this mean?
This means that the population is uniform and the sample mean and the population mean are equal.
Exercise 22
List the reasons for sampling. Give an example of each reason for sampling.
1. Contacting whole population is time consuming. If the population is California residents, it will take a long time to send everyone a survey and then process the results.
2. Contacting whole population is costly. Same example of...

...
HYPERLINK "http://www.finalexamanswer.com/QNT-561-Final-Exam_p_61.html" DOWNLOAD ANSWERS
QNT561 Final Exam
1) Which of the following measures of central location is affected most by extreme values? A. MeanB. MedianC. Mode D. Geometric mean
2) A correlation matrix…A.Shows all simple coefficients of correlation between variablesB. shows only correlations that are zeroC. shoes the correlations that are positiveD. shows...

...Individual Assignment:
Week 4
QNT561
November 1, 2010
Lee Chang
Question 5
In the following situations, decide whether you would use a personal interview, telephone survey, or self-administered questionnaire. Give your reasons.
a) A survey of the residents of a new subdivision on why they happened to select that area in which to live. You also wish to secure some information about what they like and do not like about life...

...QNT/561: Week One Assignment
Exercises 80, 82, and 87 (Ch. 3)
Exercise 80*
a. The times are a population because we are considering the wait times for all of the customers seated on Saturday night.
b. To find the mean:
µ = ∑ X
N
µ = 1021
25
µ = 40.84
To find the median:
The midpoint value of the population is 39.
c. To find the range:
Range = Largest Value – Smallest Value
Range = 67 – 23
Range = 44...

...
This pack of QNT561Week1 Individual Assignment shows the solutions to the following problems:
Problem 80
Problem 82
Problem 87
Part II
Problem 34
Problem 36
Problem 38
Problem 45
Problem 62
Problem 42
Problem 45
Deadline: (...

...
Name
Assignment
QNT/561
Date
Descriptive Statistics
Sales (in USD)
The distribution is normally distributed.
Central Tendency:
Mean = 42.84 dollars.
Dispersion:
Standard deviation = 9.073 dollars.
Count:
100
Min/Max:
Min is $23.00; Max is $64.00
Confidence Interval (alpha = 0.05):
$41.06 to $44.62
The histogram is present in Appendix A; the descriptive statistics are present in Appendix B.
Age
The distribution is not normally...

...
Statistics in Business
QNT/351
Statistics in business
The purpose of this essay is to examine the purpose of statistics in business. Our text, Lind (2011) defines statistics as “The science of collecting, organizing, presenting, analyzing, and interpreting data to assist in making more effective decisions” (p.5).
Types and levels of statistics
There are two major types of statistics, descriptive and inferential. Descriptive statistics is defined by Lind (2011) as “methods...

650 Words |
4 Pages

Share this Document

Let your classmates know about this document and more at StudyMode.com

## Share this Document

Let your classmates know about this document and more at StudyMode.com