Question

A survey of several 9 to 11 year olds recorded the following amounts spent on a...

A survey of several 9 to 11 year olds recorded the following amounts spent on a trip to the mall: $20.60,$16.44,$10.80,$13.86,$21.22,$10.65,$20.34 Construct the 95% confidence interval for the average amount spent by 9 to 11 year olds on a trip to the mall. 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.

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
A survey of several 9 to 11 year olds recorded the following amounts spent on a...
A survey of several 9 to 11 year olds recorded the following amounts spent on a trip to the mall: $19.26, $21.87, $15.83, $20.57, $19.31, $24.74, $22.82 Construct the 95% confidence interval for the average amount spent by 9 to 11 year olds on a trip to the mall. Assume the population is approximately normal.
A survey of several 10 to 11 year olds recorded the following amounts spent on a...
A survey of several 10 to 11 year olds recorded the following amounts spent on a trip to the mall: $25.36,$29.05,$22.78,$24.07 Construct the 95% confidence interval for the average amount spent by 10 to 11 year olds on a trip to the mall. Assume the population is approximately normal.
A survey of several 10 to 11 year olds recorded the following amounts spent on a...
A survey of several 10 to 11 year olds recorded the following amounts spent on a trip to the mall: $18.41,$18.46,$17.83$⁢18.41,$⁢18.46,$⁢17.83 Construct the 99% confidence interval for the average amount spent by 10 to 11 year olds on a trip to the mall. Assume the population is approximately normal. Step 1 of 4: Calculate the sample mean for the given sample data. Round your answer to two decimal places. Step 2 of 4: Calculate the sample standard deviation for the...
A survey of several 11 to 13 year olds recorded the following amounts spent on a...
A survey of several 11 to 13 year olds recorded the following amounts spent on a trip to the mall: $28.51,$25.01,$29.61,$30.31,$24.12,$27.49 Construct the 95% confidence interval for the average amount spent by 11 to 13 year olds on a trip to the mall. Assume the population is approximately normal. Step 1 of 4 :   Calculate the sample mean for the given sample data. Round your answer to two decimal places.
A survey of several 10 to 11 year olds recorded the following amounts spent on a...
A survey of several 10 to 11 year olds recorded the following amounts spent on a trip to the mall: $19.17,$21.18,$20.38,$25.08 $⁢19.17,$⁢21.18,$⁢20.38, $⁢25.08 Construct the 90%90% confidence interval for the average amount spent by 10 to 11 year olds on a trip to the mall. Assume the population is approximately normal. Copy Data
A survey of several 8 to 10 year olds recorded the following amounts spent on a...
A survey of several 8 to 10 year olds recorded the following amounts spent on a trip to the mall: $24.95, $20.44 ,$20.63, $21.78 Construct the 99% confidence interval for the average amount spent by 8 to 10 year olds on a trip to the mall. Assume the population is approximately normal. Step 1: Calculate the sample mean for the given sample data. Round your answer to two decimal places. Step 2: Calculate the sample standard deviation for the given...
A survey of several 8 to 10 year olds recorded the following amounts spent on a...
A survey of several 8 to 10 year olds recorded the following amounts spent on a trip to the mall: $24.95, $20.44 ,$20.63, $21.78 Construct the 99% confidence interval for the average amount spent by 8 to 10 year olds on a trip to the mall. Assume the population is approximately normal. Step 1: Calculate the sample mean for the given sample data. Round your answer to two decimal places. Step 2: Calculate the sample standard deviation for the given...
The following measurements (in picocuries per liter) were recorded by a set of ozone detectors installed...
The following measurements (in picocuries per liter) were recorded by a set of ozone detectors installed in a laboratory facility: 201.9,203.6,264.1,235.6,221.1 Using these measurements, construct a 90% confidence interval for the mean level of ozone present in the facility. Assume the population is approximately normal. Copy Data Step 1 of 4: Calculate the sample mean for the given sample data. Round your answer to two decimal places. Step 2 of 4: Calculate the sample standard deviation for the given sample...
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for...
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 985 people age 15 or​ older, the mean amount of time spent eating or drinking per day is 1.13 hours with a standard deviation of 0.63 hour. Complete parts ​(a) through​ (d) below. LOADING... Click the icon to view the table of critical​ t-values. ​(a) A histogram of time spent eating and drinking each day is skewed right. Use this...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT