Reference no: EM132495070
1) Inferences About the Difference Between Two Population Means: Matched Samples
In order to determine whether or not a motorcycle education course improves the scores on a driving exam, a sample of 6 drivers were given the exam before and after taking the course. The results are shown below. Assume the population of differences is normally distributed.
Let d = Score After - Score Before.
Score
Before the Course
83
89
93
77
86
79
Score
After the Course
87
89
91
77
93
83
a. Compute the test statistic.
b. Using α = .05 and the p-value approach, test to see if taking the course actually increased scores on the driving exam.
2) Population Proportion
A new coffee drink called the Raktajino is being market tested. Four hundred customers were given the new drink to try. The consumers were asked whether they liked or disliked the drink bar. You are given their responses below.
Response Frequency
Liked 300
Disliked 100
400
a. What is the point estimate for the proportion of people who liked the Raktajino?
b. Construct a 97% confidence interval for the true proportion of people who liked the new drink.
c. With a .97 probability, how large of a sample needs to be taken to provide a margin of error of 4% or less?
|
How would you approach your conversation with each employee
: Write a plan for how would you approach your conversation with each employee, including the most essential topics to cover. As you write your plan, think about.
|
|
Smallest possible mean difference
: This is not a statistically significant difference. Assuming all the other results remain the same, find the smallest possible mean difference
|
|
What are the amounts of the right-of-use asset
: What are the amounts of the right-of-use asset and lease liability to be recorded at the commencement date? Lessee entered into a 10-year equipment lease on Jan
|
|
Describe the commonalities between the two visit types
: Research the typical patient and provider (physician or advanced practice provider) workflow for an ambulatory, in person, visit. Research the typical patient.
|
|
Inferences about the difference between two population means
: In order to determine whether or not a motorcycle education course improves the scores on a driving exam, a sample of 6 drivers were given the exam
|
|
Why must the coupon rate be on sonoma widget bonds
: A ytm of 7.5 percent, and a current price of $1075. if the bonds make annual payments, why must the coupon rate be on sonoma widget bonds
|
|
Calculate the standard deviation of the ages
: Calculate the standard deviation of the ages of the senior citizens. Round response to the nearest hundredths place."
|
|
What is the prevailing interest rate
: What is the prevailing interest rate if a perpetual bond were to pay $100,000 per year beginning next year and costs $1,000,000 today?
|
|
Reason for overall low rate of placement
: The counselor argues that he is doing a good job and that the reason for his overall low rate of placement is that most of his clients are severely disabled
|