A government bureau would like to estimate the average annual contributions to charity by the members of Generation Y​ (people born in the United States in the years 1981 through​ 1991). The following data show the annual contributions to charity for a random sample of 18 individuals in this age group. Complete parts a and b. $20 ​$750 ​$395 ​$160 ​$200 ​$515   ​$275 ​$410 ​$445 ​$192 ​$455 ​$325   ​$60 ​$560 ​$405 ​$150 ​$650 ​$230     a. Construct  99​% confidence interval with these data to estimate the average annual contributions to charity for this age group. ​The 99​% confidence interval is from $------ to $------ ​(Round to two decimal places as needed. Use ascending​ order.) b. What is the margin of error for this​ sample?

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A government bureau would like to estimate the average annual contributions to charity by the members of Generation Y​ (people born in the United States in the years 1981 through​ 1991). The following data show the annual contributions to charity for a random sample of 18 individuals in this age group. Complete parts a and b.
$20
​$750
​$395
​$160
​$200
​$515
 
​$275
​$410
​$445
​$192
​$455
​$325
 
​$60
​$560
​$405
​$150
​$650
​$230
 
 
a. Construct  99​% confidence interval with these data to estimate the average annual contributions to charity for this age group.
​The 99​% confidence interval is from $------ to $------
​(Round to two decimal places as needed. Use ascending​ order.)
b. What is the margin of error for this​ sample?
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