QUESTION 1 1 points Consider a sample of size 35 from a normal distribution with

Question

QUESTION 1 1 points Consider a sample of size 35 from a normal distribution with mean 135.0 and sigma 11.78. What is the value of a 99.5 lower-confidence bound for the mean? O mu 1294 O mu 134 133 O mu-124787 QUESTION 2 1 points Consider a sample of size 37 from a normal distribution with mean 12.3 and sigma 1.8. What is the value of a 99.75 lower- confidence bound for the mean? O mu 11405 O mux 10805 O mu-12.054 O mus. 12.035 O mu 12.163 QUESTION 3 1 points Consider a sample of size 34 from a normal distribution with mean 17.9 and sigma 3.97. What is the value of a two-sided 99.9 confidence interval for the mean? O (16468 193320 O (17516 182B4 O 000626 794 O (156620.140 (6375.19425 QUESTION 4 1 points Save Answer Consider a sample of size 20 from a normal distribution with mean 17.4 and sigma 3.9. What is the value of a two-sided 98.0 confidence interval for the mean? O (15631.19 168M O (5371.19.429 O (16046.17854 O (15609.1919)

Explanation / Answer

1.Given n=35

Mean X=135

=11.78

Confidence interval =(129.411, 14.595)

Lower confidence =129.411

2.

Given n=37

Mean X=12.3

=1.8

Confidence interval =(11.469, 13.1315)

Lowered confidence =11.469

4.

Given n=20

Mean X=17.4

=3.9

Confidence interval =(15.371, 19.429)

7.

Given n=34

Mean X=0.5

=0.06

Confidence interval =(0.527, 0.474)

Upper confidence =0.527

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