Question
Asked Jan 24, 2020
117 views

A confidence interval for a population mean has a margin of error of 10.7.

a. Obtain the length of the confidence interval.
b. If the mean of the sample is 75.2, determine the confidence interval.
c. Express the confidence interval in the form “point estimate ± margin of error.”

check_circle

Expert Answer

Step 1

From the given question,

It is given that a confidence interval for a population mean has a margin of error of 10.7.

That is, E = 10.7.

a.

The required length of the confidence interval can be expressed or calculated as:

Statistics homework question answer, step 1, image 1
fullscreen
Step 2

b.

The confidence interval can be computed as:

Here, mean of...

Statistics homework question answer, step 2, image 1
fullscreen

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

Other

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: For a variable with a density curve, what is the relationship between the percentage of all possible...

A: For a variable with density curve, the percentage of all possible observations of the variable that ...

question_answer

Q: Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothe...

A: Denote x as the number of specified characteristics, the hypothesized proportion as p and the sample...

question_answer

Q: A variable is normally distributed with mean 6 and standard deviation 2. a. Determine and interpret ...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

question_answer

Q: 8. True or False? The mean is the best measure of central tendency for a data set where they are no ...

A: Mean:It is one of the measures of central tendenacy where the value is calculated by dividing the su...

question_answer

Q: Exacta In a horse race, an exacta bet is won by correctly selecting the horses that finish first and...

A: Permutations rule:There are n different items and r number of selections. If the selections are made...

question_answer

Q: For a normally distributed variable, what is the relationship between the percentage of all possible...

A: Justification:The area under the associated normal curve to the right of 7 is given.From the given i...

question_answer

Q: Please help

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,...

question_answer

Q: Gasoline Mileage. An engineer wants to determine factors that affect the EPA miles per gallon rating...

A: (a)Justification:Predictor variable:Predictor variable in a regression is the independent variable, ...

question_answer

Q: Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarize...

A: Given data