Question

Noise levels at 5 volcanoes were measured in decibels yielding the following data: 108,133,140,129,136 Construct the...

Noise levels at 5 volcanoes were measured in decibels yielding the following data:

108,133,140,129,136

Construct the 98% confidence interval for the mean noise level at such locations. Assume the population is approximately normal.

Step 3 of 4: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

Step 4 of 4: Construct the 98% confidence interval. Round your answer to one decimal place.

Homework Answers

Answer #1

Solution :

From the given data ,

n = 5

s = 12.5

= 646 / 5 = 129.2

t /2,df = 3.747

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

= 3.747 * (12.5 / 5)

Margin of error = E = 20.9

The 98% confidence interval estimate of the population mean is,

- E < < + E

129.2 - 20.9 < < 129.2 + 20.9

108.3 < < 150.1

(108.3 , 150.1)

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Noise levels at 5 volcanoes were measured in decibels yielding the following data: 126,155,175,163,162 Construct the...
Noise levels at 5 volcanoes were measured in decibels yielding the following data: 126,155,175,163,162 Construct the 98% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 3 of 4 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Step 4 of 4: construct the 98% confidence interval.
Noise levels at 3 volcanoes were measured in decibels yielding the following data: 142,113,135 Construct the...
Noise levels at 3 volcanoes were measured in decibels yielding the following data: 142,113,135 Construct the 90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 3 of 4: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places
Noise levels at 3 volcanoes were measured in decibels yielding the following data: 149,163,157 Construct the...
Noise levels at 3 volcanoes were measured in decibels yielding the following data: 149,163,157 Construct the 90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. 1. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. 2. Find the upper and lower endpoints
Noise levels at 4 volcanoes were measured in decibels yielding the following data: 153,156,168,138 Construct the...
Noise levels at 4 volcanoes were measured in decibels yielding the following data: 153,156,168,138 Construct the 99% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 1 of 4: Calculate the sample mean for the given sample data. Round your answer to one decimal place. Step 2 of 4: Calculate the sample standard deviation for the given sample data. Round your answer to one decimal place. Step 3 of 4: Find the...
Noise levels at 5 airports were measured in decibels yielding the following data: 154,104,155,124,116 Construct the...
Noise levels at 5 airports were measured in decibels yielding the following data: 154,104,155,124,116 Construct the 80% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 3 of 4: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. step 4 of 4:Construct the 80% confidence interval. Round your answer to one decimal place.
Noise levels at 3 volcanoes were measured in decibels yielding the following data: 142,113,135 Construct the...
Noise levels at 3 volcanoes were measured in decibels yielding the following data: 142,113,135 Construct the 90%90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Copy Data Step 2 of 4: Calculate the sample standard deviation for the given sample data. Round your answer to one decimal place
Noise levels at 5 concerts were measured in decibels yielding the following data: 142,142,123,133,139 Construct the...
Noise levels at 5 concerts were measured in decibels yielding the following data: 142,142,123,133,139 Construct the 99% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 3 of 4 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Noise levels at 3 airports were measured in decibels yielding the following data: 158,140,147 Construct the...
Noise levels at 3 airports were measured in decibels yielding the following data: 158,140,147 Construct the 98% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 4 of 4 : Construct the 98% confidence interval. Round your answer to one decimal place.
Noise levels at 7 manufacturing plants were measured in decibels yielding the following data: 138,123,142,119,130,159,139 Construct...
Noise levels at 7 manufacturing plants were measured in decibels yielding the following data: 138,123,142,119,130,159,139 Construct the 80% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 3 of 4 :   Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Noise levels at 6 airports were measured in decibels yielding the following data: 157,164,160,147,152,153 Construct the...
Noise levels at 6 airports were measured in decibels yielding the following data: 157,164,160,147,152,153 Construct the 99% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Copy Data Step 4 of 4 :   Construct the 99% confidence interval. Round your answer to one decimal place.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT