A random sample of 15 exam scores showed a standard deviation of 6.0 points. Find the 95 percent confidence interval for the population standard deviation. Use Appendix E to obtain the values of  χ2LχL2 and χ2UχU2 . (Round your answers to 2 decimal places.) The 95% confidence interval is from ______ to __________  .

Question
Asked Sep 29, 2019

A random sample of 15 exam scores showed a standard deviation of 6.0 points. Find the 95 percent confidence interval for the population standard deviation. Use Appendix E to obtain the values of  χ2LχL2 and χ2UχU2 . (Round your answers to 2 decimal places.)
 
The 95% confidence interval is from ______ to __________  .

check_circleExpert Solution
Step 1

The sample size, n is provided as 15 with a sample standard deviation, s of 6.0. The confidence level is 95%. Therefore, the level of significance is...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour*

See Solution
*Response times may vary by subject and question
Tagged in

Math

Statistics

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: What is the probability of randomly selecting a z-score less than z = 1.25 from a normal distributio...

A: A normal distribution can be visualized by looking at the curve below. X-axis shows Z score which is...

question_answer

Q: I do not understand why I keep getting the wrong answer to part b. For part a I used 184,223/347,847...

A: According to the provided information, total number of students who have Business degrees are 347,84...

question_answer

Q: Based on data from a statistical abstract, only about 11% of senior citizens (65 years old or older)...

A: Note:Hi there! Thank you for posting the question. As your question has more than 3 parts, we have s...

question_answer

Q: Refer to the sample of body temperatures​ (degrees Fahrenheit) in the table below. Given these​ temp...

A: The given table represents the sample of body temperatures (degrees Fahrenheit) and its exposure to ...

question_answer

Q: 70, 88, 103, 64, 88, 100, 78, 80, 77, 69, 85, 65, 71, 90, 88, 75, 80,72, 60, 70,60,75, 79 what is th...

A: Introduction:Class width: The class width of a class in a frequency distribution is the difference o...

question_answer

Q: How do I solve this? I have no idea where to beging. My class is online so I'm litteraly teaching my...

A: As per the question, I am making tree diagram for better understanding

question_answer

Q: The sample space listing the eight simple events that are possible when a couple has three children ...

A: Identify the sample space for a couple having four children. From the given information, the couple ...

question_answer

Q: 12. Conference USA table-tennis coaches have a mean annual salary (in dollars) of 33,000 and a stand...

A: Chebyshev’s Inequality:Suppose X is a random variable with mean μ and standard deviation σ. For a re...

question_answer

Q: Assume that a procedure yields a binomial distribution with a trail repeated n times. Use the binomi...

A: Binomial distribution:The probability mass function (pmf) of a binomial random variable X is given a...