Question

If n=12, ¯xx¯ (x-bar)=31, and s=8, find the margin of error at a 99% confidence level...

If n=12, ¯xx¯ (x-bar)=31, and s=8, find the margin of error at a 99% confidence level (use at least three decimal places)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Given that,

= 31

s =8

n = 12

Degrees of freedom = df = n - 1 =12 - 1 = 11

At 99% confidence level the t is ,

= 1 - 99% = 1 - 0.99 = 0.01

/ 2 = 0.01 / 2 = 0.005

t /2,df= t0.005,11= 3.106 ( using student t table)

Margin of error = E = t/2,df * (s /n)

= 3.106* (8 / 12) = 7.173

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
If n=26, ¯xx¯ (x-bar)=50, and s=6, find the margin of error at a 99% confidence level...
If n=26, ¯xx¯ (x-bar)=50, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)
If n=27, ¯ x (x-bar)=46, and s=9, find the margin of error at a 95% confidence...
If n=27, ¯ x (x-bar)=46, and s=9, find the margin of error at a 95% confidence level (use at least two decimal places) If n=19, ¯xx¯ (x-bar)=48, and s=6, find the margin of error at a 95% confidence level (use at least two decimal places) If n=16, ¯xx¯ (x-bar)=48, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)
If n=18, ¯xx¯(x-bar)=40, and s=10, find the margin of error at a 99% confidence level Give...
If n=18, ¯xx¯(x-bar)=40, and s=10, find the margin of error at a 99% confidence level Give your answer to two decimal places.
1. If n=23, x¯ (x-bar)=32, and s=5, find the margin of error at a 95% confidence...
1. If n=23, x¯ (x-bar)=32, and s=5, find the margin of error at a 95% confidence level (use at least two decimal places) 2. If n=24, ¯x¯ (x-bar)=47, and s=4, find the margin of error at a 99% confidence level (use at least three decimal places)
If n=22, ¯xx(x-bar)=41, and s=2, find the margin of error at a 90% confidence level Give...
If n=22, ¯xx(x-bar)=41, and s=2, find the margin of error at a 90% confidence level Give your answer to two decimal places.
If n=28, ¯xx(x-bar)=46, and s=7, find the margin of error at a 95% confidence level Give...
If n=28, ¯xx(x-bar)=46, and s=7, find the margin of error at a 95% confidence level Give your answer to two decimal places.
If n=10, ¯xx(x-bar)=34, and s=4, find the margin of error at a 95% confidence level Give...
If n=10, ¯xx(x-bar)=34, and s=4, find the margin of error at a 95% confidence level Give your answer to two decimal places.
a) If n=10, ¯xx¯(x-bar)=33, and s=10, construct a confidence interval at a 80% confidence level. Assume...
a) If n=10, ¯xx¯(x-bar)=33, and s=10, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. < μμ < b) In a survey, 27 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $8. Find the margin of error at a 99% confidence level. Give your answer...
If n=31, ¯ x (x-bar)=33, and s=3, find the margin of error at a 90% confidence...
If n=31, ¯ x (x-bar)=33, and s=3, find the margin of error at a 90% confidence level Give your answer to two decimal places.
If n=32, ¯ x (x-bar)=44, and s=7, find the margin of error at a 95% confidence...
If n=32, ¯ x (x-bar)=44, and s=7, find the margin of error at a 95% confidence level (use at least two decimal places)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT