we are going to construct a confidence interval based on a collection of sample data. Read the following: We are interested in the average wait estimated time of our local ER at 7 PM on Friday nights. So, we sample 18 estimated wait times (in minutes) at 7 PM on Friday nights over the last 2 years and found the following: 3, 8, 25, 47, 61, 25, 10, 32, 31, 20, 10, 15, 7, 62, 48, 51, 17, 30 Using these ER wait times, construct a 90% confidence interval for the mean ER wait times for Friday nights at 7 PM Answer the following questions What is the sample mean and sample standard deviation of this data set? Should we be using the Z or T distribution? Explain why Find the Critical Z or T value for this problem. Compute the Margin of Error, E Write out the confidence interval The ER claims its average wait time on Friday nights will be less than 35 minutes. Based on our confidence interval, does this seem like a valid claim?
we are going to construct a confidence interval based on a collection of sample data. Read the following: We are interested in the average wait estimated time of our local ER at 7 PM on Friday nights. So, we sample 18 estimated wait times (in minutes) at 7 PM on Friday nights over the last 2 years and found the following: 3, 8, 25, 47, 61, 25, 10, 32, 31, 20, 10, 15, 7, 62, 48, 51, 17, 30 Using these ER wait times, construct a 90% confidence interval for the mean ER wait times for Friday nights at 7 PM Answer the following questions What is the sample mean and sample standard deviation of this data set? Should we be using the Z or T distribution? Explain why Find the Critical Z or T value for this problem. Compute the Margin of Error, E Write out the confidence interval The ER claims its average wait time on Friday nights will be less than 35 minutes. Based on our confidence interval, does this seem like a valid claim?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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we are going to construct a confidence interval based on a collection of sample data. Read the following:
We are interested in the average wait estimated time of our local ER at 7 PM on Friday nights. So, we sample 18 estimated wait times (in minutes) at 7 PM on Friday nights over the last 2 years and found the following:
3, 8, 25, 47, 61, 25, 10, 32, 31, 20, 10, 15, 7, 62, 48, 51, 17, 30
Using these ER wait times, construct a 90% confidence interval for the
Answer the following questions
- What is the sample mean and sample standard deviation of this data set?
- Should we be using the Z or T distribution? Explain why
- Find the Critical Z or T value for this problem.
- Compute the Margin of Error, E
- Write out the confidence interval
- The ER claims its average wait time on Friday nights will be less than 35 minutes. Based on our confidence interval, does this seem like a valid claim?
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