Use the given information to find the number of degrees of freedom, the critical values x? and x, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 80% confidence; n= 27, s = 0.23 mg. Click the icon to view the table of Chi-Square critical values. df = I(Type a whole number.) (Round to three decimal places as needed.) (Round to three decimal places as needed.) mg. The confidence interval estimate of o is mg

Question
Use the given information to find the number of degrees of freedom, the critical values x? and x, and the confidence interval estimate of o. It is
reasonable to assume that a simple random sample has been selected from a population with a normal distribution.
Nicotine in menthol cigarettes 80% confidence; n= 27, s = 0.23 mg.
Click the icon to view the table of Chi-Square critical values.
df =
I(Type a whole number.)
(Round to three decimal places as needed.)
(Round to three decimal places as needed.)
mg.
The confidence interval estimate of o is mg <o<
(Round to two decimal places as needed.)
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i Area to the right of the critical value
Degrees of
Freedom
Degrees of
Freedom
0.995
0.99
0.975
0.95
0.90
0.10
0.06
0.025
0.01
0.005
0.001
0.004
0.016
2.706
3.841
5.024
6.635
7.879
0.010
0.020
0.051
0.103
0211
4.605
5.991
7.378
9210
10.597
0.072
0.115
0216
0.352
0.584
6.251
7.815
9.348
11.345
12.838
4
0.207
0.297
0.484
0.711
1.064
7.779
9.488
11.143
13277
14.860
0.412
0.554
0.831
1.145
1.610
9.236
11.071
12.833
15.006
16.750
0.676
0.872
1.237
1.635
2204
10.645
12.592
14.449
16.812
18.548
0.989
1.239
1.690
2.167
2.833
12.017
14.067
16.013
18.475
20.278
1.344
1.646
2.180
2.733
3.490
13.362
15.507
17.535
20.090
21.955
8.
1.735
2.088
2.700
3.325
4.168
14.684
16.919
19.023
21.666
23.589
10
2.156
2.558
3247
3.940
4.865
15.987
18.307
20.483
23.209
25.188
10
11
2.603
3.063
3.816
4.575
5.578
17.275
19.675
21.920
24.725
26.757
11
12
3.074
3.571
4.404
5.226
6.304
18.549
21.026
23.337
26.217
28.299
12
13
3.565
4.107
5.009
5.892
7.042
19.812
22.362
24.736
27.688
29.819
13
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Transcribed Image Text

Use the given information to find the number of degrees of freedom, the critical values x? and x, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 80% confidence; n= 27, s = 0.23 mg. Click the icon to view the table of Chi-Square critical values. df = I(Type a whole number.) (Round to three decimal places as needed.) (Round to three decimal places as needed.) mg. The confidence interval estimate of o is mg <o< (Round to two decimal places as needed.)

i Area to the right of the critical value Degrees of Freedom Degrees of Freedom 0.995 0.99 0.975 0.95 0.90 0.10 0.06 0.025 0.01 0.005 0.001 0.004 0.016 2.706 3.841 5.024 6.635 7.879 0.010 0.020 0.051 0.103 0211 4.605 5.991 7.378 9210 10.597 0.072 0.115 0216 0.352 0.584 6.251 7.815 9.348 11.345 12.838 4 0.207 0.297 0.484 0.711 1.064 7.779 9.488 11.143 13277 14.860 0.412 0.554 0.831 1.145 1.610 9.236 11.071 12.833 15.006 16.750 0.676 0.872 1.237 1.635 2204 10.645 12.592 14.449 16.812 18.548 0.989 1.239 1.690 2.167 2.833 12.017 14.067 16.013 18.475 20.278 1.344 1.646 2.180 2.733 3.490 13.362 15.507 17.535 20.090 21.955 8. 1.735 2.088 2.700 3.325 4.168 14.684 16.919 19.023 21.666 23.589 10 2.156 2.558 3247 3.940 4.865 15.987 18.307 20.483 23.209 25.188 10 11 2.603 3.063 3.816 4.575 5.578 17.275 19.675 21.920 24.725 26.757 11 12 3.074 3.571 4.404 5.226 6.304 18.549 21.026 23.337 26.217 28.299 12 13 3.565 4.107 5.009 5.892 7.042 19.812 22.362 24.736 27.688 29.819 13 Print Done