Statistic homework help
Name:______________________________________
Module 2 Homework Assignment
1.) 459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a point estimate of the true proportion of all light bulbs that last more than 500 hours.
Solution:
|
Instructor Comments: |
2.) Find the critical value for zα/2 that corresponds to a degree of confidence of 98%.
Solution:
|
Instructor Comments: |
3.) Find the critical value for tα/2 corresponding to n = 12 and 95% confidence level.
Solution:
|
Instructor Comments: |
4.) Use the confidence level and sample data to find the margin of error E.
College students’ annual earnings:
Solution:
|
Instructor Comments: |
5.) Construct the confidence interval for question 4 above.
Solution:
|
Instructor Comments: |
6.) Write a statement that correctly interprets the confidence interval found in question 5.
Solution:
|
Instructor Comments: |
7.)
Solution:
|
Instructor Comments: |
8.)
Solution:
|
Instructor Comments: |
9.)
4.2 5.4 5.8 6.2 6.7 7.7 8.5 9.3 10.0
Solution:
|
Instructor Comments: |
10.) You want to estimate for the population of waiting times at a fast-food restaurant’s drive-up windows, and you want to be 95% confident that the sample standard deviation is within 20% of . Find the minimum sample size needed. Is this sample size practical?
Solution:
|
Instructor Comments: |
S
Needs help with similar assignment?
We are available 24x7 to deliver the best services and assignment ready within 3-4 hours? Order a custom-written, plagiarism-free paper
![](https://powerpointpresentationhelp.com/wp-content/uploads/2022/03/WhatsApp_icon.png)
![](https://powerpointpresentationhelp.com/wp-content/uploads/2022/03/205-2057855_essay-icon.png)