na survey, 25 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $31 and standard deviation of s14. Construct a confidence interval at a 80% confidence level. Give your answers to one decimal place. Interpret your confidence interval in the context of this problem.

In a survey, 32 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $41 and standard deviation of $12. Construct a confidence interval at a 95% confidence level.Give your answers to one decimal place.

Get an education: In 2012 the General Social Survey asked 844 adults how many years of education they had. The sample mean was 8.54 years with a standard deviation of 8.58 years.

In a survey, 20 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $31 and standard deviation of $17. Construct a confidence interval at a 95% confidence level.Give your answers to one decimal place.

In a survey, 17 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $39 and standard deviation of $5. Construct a confidence interval at a 90% confidence level. Give your answers to one decimal place. +

I'm stuck on part 2.  Can you work the problem and explain how to get the answer to part B?  If it can be put into the calculator, I can't remember the process. Please explain. Thank you. Translate the statement into a confidence interval. Approximate the level of confidence.   In a survey of 1100 adults in a​ country, 68​% think teaching is one of the most important jobs in the country today. The​ survey's margin of error is ±4​%.       Question content area bottom Part 1 The confidence interval for the proportion is . 64.64,. 72.72. ​(Round to three decimal places as​ needed.) Part 2 The interval is a enter your response here​% confidence interval. ​(Round to one decimal place as​ needed.)

In a survey, 16 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $49 and standard deviation of $13. Construct a confidence interval at a 99% confidence level.Give your answers to one decimal place.

a survey, 30 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $47 and standard deviation of $6. Construct a confidence interval at a 80% confidence level. Give your answers to one decimal place. H

In a survey, 30 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $30 and standard deviation of $16. Construct a confidence interval at a 99% confidence level.Give your answers to one decimal place.

Construct a 96% confidence interval if x=75 and n=200. Round your answers to 3 decimal places.