WGU C207 OA DATA DRIVEN
DECISION MAKING FINAL
EXAM 2025 LATEST NEWEST
UPDATE WITH ACTUAL
QUESTIONS AND DETAILED
VERIFIED ANSWERS WITH
RATIONALES (100% CORRECT)
//BRAND NEW!! /ALREADY
GRADED A+ WITH
GUARANTEED SUCCESS AFTER
DOWNLOAD (ALL YOU NEED TO
PASS YOUR EXAMS
A cable company offers its customers both cable television and internet. What statistical rule
should be used to determine the probability that customers will have both cable television and
internet?
, Multiplication
A department store is considering a new credit policy to reduce defaults on payments. Its
records show that 95% of defaults have at least 2 late payments. Also, 3% of all customers
default and 30% of those customers who have not defaulted have a least 2 late payments.
What statistical rule should be used to find the probability that a customer will default given
that at least 2 payments were late?
Bayes Theorem
Based on quality checks at a plastic bags manufacturer, the breaking strength of their bags
has a mean of 50.5 and a standard deviation of 1.6. A customer's test of the bags finds bag
strength of 54.2 or less. Which statistical measure should be used to help determine the
probability of the customer's test occurring?
z-score
The mean of 100 bank customers' waiting times for teller service is 5.8 minutes with a
standard deviation of 1.5. What time range would represent a 95.4% probability customer
waiting time?
2.8 to 8.8
The revenue of NBA teams ranges from $226 million for the New York Knicks to $92
million for the Milwaukee Bucks. Which statistic would measure how far each and all NBA
team's revenue is from the NBA revenue mean?
variance
A local plumbing company is analyzing to see how the number of weeks taken for their
payment receipts is distributed. Which graphical analysis technique should they use?
histogram
A loan officer compares the interest rates for 48 month fixed-rate loans and 48 month
variable-rate auto loans. Two independent, random samples of auto loans are selected. Which
two results happen when the null hypothesis is rejected using a t-test? (Pick 2)
The null hypothesis is rejected given a probability of being wrong and the test statistic is
greater than the critical value
An online marketing organization designed a social media that wants to earn at least
$250,000 in revenue. The campaign will reach 10,000 viewers and receive orders with a
mean of $50 and standard deviation of $10. Which measure should be used to determine the
probability of the campaign receiving at least $250,000?
, z-score
What does it mean when an individual data point has a z-score of +1?
The data point is one standard deviation greater than the mean of the data set.
A descriptive graph depicting whether there is a correlation or relationship between two
variables, such as car mileage and resale price would be:
scatterplot
A food chain finds that there is a strong positive correlation between average daily sales for
their pizza store and the number of daily visits to their website. What should be considered
before the pizza chain can conclude that the daily sales are driving the number of visits to
their website (or vice versa)?
Is there a causal relationship between sales and site visits?
We examine a population with normal distribution having mean of 1000 and standard
deviation of 50. What percentage of the population lies between 850 and 1150?
99.7%
We examine a population with normal distribution having a mean of 1000 and standard
deviation of 50. What percentage of the population lies between 900 and 1100?
95.4%
How are z-scores from a population with normal distribution distributed?
Normal Distribution with mean 0 standard deviation 1
A stock broker offers two portfolios for his clients. There are various risks with each portfolio
and his is trying to minimize the risk of loss. Both portfolios have the same mean return.
Which measure should the employee use to decide between these alternatives?
variance
A comparison between the effectiveness of online vs. newspaper coupons was conducted
over a 3 month period to see which method brought in greater average revenue per customer.
Which statistic should the pizza manager recommend use to determine promotional method
to use?
T-test
For companies to attract and retain their best customers they need a complete portrait of who
they are. To develop this portrait companies turn to
Analytics
DECISION MAKING FINAL
EXAM 2025 LATEST NEWEST
UPDATE WITH ACTUAL
QUESTIONS AND DETAILED
VERIFIED ANSWERS WITH
RATIONALES (100% CORRECT)
//BRAND NEW!! /ALREADY
GRADED A+ WITH
GUARANTEED SUCCESS AFTER
DOWNLOAD (ALL YOU NEED TO
PASS YOUR EXAMS
A cable company offers its customers both cable television and internet. What statistical rule
should be used to determine the probability that customers will have both cable television and
internet?
, Multiplication
A department store is considering a new credit policy to reduce defaults on payments. Its
records show that 95% of defaults have at least 2 late payments. Also, 3% of all customers
default and 30% of those customers who have not defaulted have a least 2 late payments.
What statistical rule should be used to find the probability that a customer will default given
that at least 2 payments were late?
Bayes Theorem
Based on quality checks at a plastic bags manufacturer, the breaking strength of their bags
has a mean of 50.5 and a standard deviation of 1.6. A customer's test of the bags finds bag
strength of 54.2 or less. Which statistical measure should be used to help determine the
probability of the customer's test occurring?
z-score
The mean of 100 bank customers' waiting times for teller service is 5.8 minutes with a
standard deviation of 1.5. What time range would represent a 95.4% probability customer
waiting time?
2.8 to 8.8
The revenue of NBA teams ranges from $226 million for the New York Knicks to $92
million for the Milwaukee Bucks. Which statistic would measure how far each and all NBA
team's revenue is from the NBA revenue mean?
variance
A local plumbing company is analyzing to see how the number of weeks taken for their
payment receipts is distributed. Which graphical analysis technique should they use?
histogram
A loan officer compares the interest rates for 48 month fixed-rate loans and 48 month
variable-rate auto loans. Two independent, random samples of auto loans are selected. Which
two results happen when the null hypothesis is rejected using a t-test? (Pick 2)
The null hypothesis is rejected given a probability of being wrong and the test statistic is
greater than the critical value
An online marketing organization designed a social media that wants to earn at least
$250,000 in revenue. The campaign will reach 10,000 viewers and receive orders with a
mean of $50 and standard deviation of $10. Which measure should be used to determine the
probability of the campaign receiving at least $250,000?
, z-score
What does it mean when an individual data point has a z-score of +1?
The data point is one standard deviation greater than the mean of the data set.
A descriptive graph depicting whether there is a correlation or relationship between two
variables, such as car mileage and resale price would be:
scatterplot
A food chain finds that there is a strong positive correlation between average daily sales for
their pizza store and the number of daily visits to their website. What should be considered
before the pizza chain can conclude that the daily sales are driving the number of visits to
their website (or vice versa)?
Is there a causal relationship between sales and site visits?
We examine a population with normal distribution having mean of 1000 and standard
deviation of 50. What percentage of the population lies between 850 and 1150?
99.7%
We examine a population with normal distribution having a mean of 1000 and standard
deviation of 50. What percentage of the population lies between 900 and 1100?
95.4%
How are z-scores from a population with normal distribution distributed?
Normal Distribution with mean 0 standard deviation 1
A stock broker offers two portfolios for his clients. There are various risks with each portfolio
and his is trying to minimize the risk of loss. Both portfolios have the same mean return.
Which measure should the employee use to decide between these alternatives?
variance
A comparison between the effectiveness of online vs. newspaper coupons was conducted
over a 3 month period to see which method brought in greater average revenue per customer.
Which statistic should the pizza manager recommend use to determine promotional method
to use?
T-test
For companies to attract and retain their best customers they need a complete portrait of who
they are. To develop this portrait companies turn to
Analytics
