menu
bartleby
search
close search
Hit Return to see all results

Construct a confidence interval for μ assuming that each sample is from a normal population.(a) x⎯⎯x¯ = 24, σ = 3, n = 13, 90 percentage confidence. (Round your answers to 2 decimal places.) The 90% confidence interval is from  _______   to ________ . (b) x⎯⎯x¯ = 120, σ = 11, n = 26, 99 percentage confidence. (Round your answers to 2 decimal places.) The 99% confidence interval is from _______    to _______  . (c) x⎯⎯x¯ = 12.2, σ = 1.3, n = 52, 95 percentage confidence. (Round your answers to 3 decimal places.) The 95% confidence interval is from  ________   to ________ .

Question

Construct a confidence interval for μ assuming that each sample is from a normal population.

(a) x⎯⎯x¯ = 24, σ = 3, n = 13, 90 percentage confidence. (Round your answers to 2 decimal places.)
 
The 90% confidence interval is from  _______   to ________ .
 
(b) x⎯⎯x¯ = 120, σ = 11, n = 26, 99 percentage confidence. (Round your answers to 2 decimal places.)
 
The 99% confidence interval is from _______    to _______  .
 
(c) x⎯⎯x¯ = 12.2, σ = 1.3, n = 52, 95 percentage confidence. (Round your answers to 3 decimal places.)
 
The 95% confidence interval is from  ________   to ________ .

 
check_circleAnswer
Step 1

(a) The 90% confidence interval is:

 

n
2
3
24+1.645
-1.645 is fhe critical valne at 0.1 significance level
24 1.37
(24 -137,24+1.37)
(22.63,25.37)
help_outline

Image Transcriptionclose

n 2 3 24+1.645 -1.645 is fhe critical valne at 0.1 significance level 24 1.37 (24 -137,24+1.37) (22.63,25.37)

fullscreen
Step 2

(b) The 99% confidence inter...

0.01
2
11
120 2.576
/26
-2.576 is the critical value at 0.01 significance level
120 5.56
(120-5.56,120+5.56)
(114.44,125.56)
help_outline

Image Transcriptionclose

0.01 2 11 120 2.576 /26 -2.576 is the critical value at 0.01 significance level 120 5.56 (120-5.56,120+5.56) (114.44,125.56)

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Math

Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Number 9.

A: Consider Ann denoted as A, Bubba denoted as B, Carlos denoted as C, David denoted as D, and Elvira d...

question_answer

Q: The value y (in 1982–1984 dollars) of each dollar paid by consumers in each of the years from 1994 t...

A: It is a time series data, so we convert the year in periodsEntering the data in excel as shown below

question_answer

Q: xx 2020 2121 2222 2323 2424 F(x)F(x) 2424 44 99 55 11 Let xx be the ages of students in a class...

A: Here the numbers are repeated twice. So consider the below table for further calculations.

question_answer

Q: Suppose a person is looking for a one-year life insurance policy. They decide on a $232994 policy. T...

A: Probability of dying =0.0006Probability of not dying = 1-0.0006 =0.9994Net profit to company if pers...

question_answer

Q: What is the z-score of the 31st percentile?

A: The z-score for the 31st percentile is the value such that 31% of the area under the standard normal...

question_answer

Q: Evan is ordering dessert, and he wants the fudge pie. The waitress tells him that he can have up to ...

A: Click to see the answer

question_answer

Q: A group of 20 students obtained a mean score of 70 on an examination. The second group of 30 student...

A: From the question, the required information is given below:

question_answer

Q: Please explain me each step. Kyd and North are playing a game. Kyd selects one card from a standard ...

A: Here, total number of face card is 12 from the deck of cards and the remaining card is 40.If Kyd sel...

question_answer

Q: Suppose the graduation rate from the last 5 years at wayne state university hasw standard deviaton 5...

A: Standard deviation:Standard deviation helps to identify the spread of data for a group from the aver...

Sorry about that. What wasn’t helpful?