Question

The following data were randomly drawn from an approximately normal population. 31, 32, 35, 37, 42,...

The following data were randomly drawn from an approximately normal population.

31, 32, 35, 37, 42, 44, 48

Based on these data, find a

90%

confidence interval for the population standard deviation. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. (If necessary, consult a list of formulas.)

What is the lower limit of the

90%

confidence interval?
What is the upper limit of the

90%

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

Homework Answers

Answer #1

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
The scores on an examination in economics are approximately normally distributed with mean 500 and an...
The scores on an examination in economics are approximately normally distributed with mean 500 and an unknown standard deviation. The following is a random sample of scores from this examination. 422, 437, 472, 502, 534 Send data to Excel Find a 90% confidence interval for the population standard deviation. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. (If necessary, consult a list of formulas.)...
The following data were randomly drawn from an approximately normal population . 25, 25, 28, 32,...
The following data were randomly drawn from an approximately normal population . 25, 25, 28, 32, 34, 38, 41. Based on these data , find a 90% confidence inverval for the population standard deveviation .
Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate the standard deviation...
Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate the standard deviation of the lifetime of the AAA batteries it produces. A random sample of 21 AAA batteries produced by this manufacturer lasted a mean of 11 hours with a standard deviation of 1.7 hours. Find a 95% confidence interval for the population standard deviation of the lifetimes of AAA batteries produced by the manufacturer. Then complete the table below. Carry your intermediate computations to at...
The following are ages of of the signers of the Declaration of Independence. 35, 62, 52,...
The following are ages of of the signers of the Declaration of Independence. 35, 62, 52, 34, 35, 63, 48, 30, 35, 32, 36, 44, 50, 40, 39, 42, 46, 50, 45 Send data to Excel Find th and th percentiles for these ages. (If necessary, consult a list of formulas.) (a) The th percentile: (b) The th percentile: QUESTION 2 Problem Page Here are the shopping times (in minutes) for a sample of shoppers at a particular shoe store:...
A random sample of 200 individuals working in a large city indicated that 58 are dissatisfied...
A random sample of 200 individuals working in a large city indicated that 58 are dissatisfied with their working conditions. Based upon this, compute a 90% confidence interval for the proportion of all individuals in this city who are dissatisfied with their working conditions. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a list of formulas.) What is the lower limit of the...
Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate the standard deviation...
Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate the standard deviation of the lifetime of the AAA batteries it produces. A random sample of 28 AAA batteries produced by this manufacturer lasted a mean of 9.1 hours with a standard deviation of 2.2 hours. Find a 95% confidence interval for the population standard deviation of the lifetimes of AAA batteries produced by the manufacturer. Then complete the table below. Carry your intermediate computations to at...
The lifetime of a certain brand of electric light bulb is known to have a standard...
The lifetime of a certain brand of electric light bulb is known to have a standard deviation of 51 hours. Suppose that a random sample of 150 bulbs of this brand has a mean lifetime of 481 hours. Find a 90% confidence interval for the true mean lifetime of all light bulbs of this brand. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult...
The lifetime of a certain brand of battery is known to have a standard deviation of...
The lifetime of a certain brand of battery is known to have a standard deviation of 16 hours. Suppose that a random sample of 50 such batteries has a mean lifetime of 37.6 hours. Based on this sample, find a 90% confidence interval for the true mean lifetime of all batteries of this brand. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. ( If necessary, consult...
Problem Page Recorded here are the germination times (in days) for eighteen randomly chosen seeds of...
Problem Page Recorded here are the germination times (in days) for eighteen randomly chosen seeds of a new type of bean: 19, 22, 20, 20, 10, 15, 11, 13, 20, 12, 17, 19, 18, 12, 22, 22, 17, 10 Assuming that germination times are normally distributed, find a 90 % confidence interval for the mean germination time for all beans of this type. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your...
A psychologist wants to estimate the standard deviation of IQ scores. It is widely believed that...
A psychologist wants to estimate the standard deviation of IQ scores. It is widely believed that IQ scores follow a normal distribution. Her random sample of 25 IQ scores has a mean of 97.4 and a standard deviation of 17.2. Find the 99% confidence interval for the population standard deviation based on this sample. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. (If necessary,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT