Unit 2 Business Analytics

Unit 2 Business Analytics

Subject: Business    / General Business   
Question
Unit 2 [GB513: Business Analytics] Unit 2: Assignment
Make sure to use the Unit 2 Assignment template from Doc Sharing when you turn in your answers. Using the
template is part of your Grading Rubric.
You should not use Excel or any automated probability calculators for this Assignment. All of the questions
below should be calculated manually using the methodology in the Readings.
Question 1
In a class where the exam averages are normally distributed, the mean score is 75 and the standard deviation
is 10. If you want to find out the probability that a randomly picked student has scored 95 or above, what is the
z value that you should look up on the normal distribution table?
Question 2
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73.
Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.
a. What is the probability that a randomly selected monthly cell phone bill is less than $95?
b. What is the probability that a randomly selected monthly cell phone bill is between $62 and $84?
Question 3
A Travel Weekly International Air Transport Association survey asked business travelers about the purpose for
their most recent business trip. Nineteen percent responded that it was for an internal company visit. Suppose
950 business travelers are randomly selected.
a. What is the probability that more than 20% of the business travelers say that the reason for their most
recent business trip was an internal company visit?
b. What is the probability that between 18% and 20% of the business travelers say that the reason for their
most recent business trip was an internal company visit? Directions for submitting your Assignment
Make sure to use the Unit 2 Assignment template from Doc Sharing when you turn in your answers. Submit
your Assignment to the Unit 2 Dropbox. Grading Rubric
Your Assignment will be graded based on the following breakdown. 1 of 2 Unit 2 [GB513: Business Analytics] Unit 2 Assignment
Criteria Points
Possible Points
Earned Question 1
5
The z score for P(x> 95).
Question 2a
Probability that a randomly selected monthly cell phone bill is less
than $95. 10 Question 2b
Probability that a randomly selected monthly cell phone bill is
between $62 and $84. 10 Question 3a
Probability that more than 20% of the business travelers say that the
reason for their most recent business trip was an internal company
visit. 10 Question 3b
Probability that between 18% and 21% of the business travelers say
that the reason for their most recent business trip was an internal
company visit. 10 Properly completed assignment template. 5 Total 50 2 of 2