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Date Submitted: 08/14/2011 06:10 AM
Gayle Britton- Week 2 Individual E= Text August 13, 2011
Question 9.54
Ho: mean is < or = H1: mean > 10
Hypothesis Test: Mean vs. Hypothesized Value
10.0000 hypothesized value
14.4400 mean fax
4.4500 std. dev.
0.7522 std. error
35 n
5.90 z
1.79E-09 p-value (one-tailed, upper)
12.5025 confidence interval 99.% lower
16.3775 confidence interval 99.% upper
1.9375 margin of error
The true mean greater than 10 yes therefore we do not accept Ho. The right -tail p-vaule is 1.79E-09.
Question 9.62
Ho: Prop < = .95 H1: Prop > .95
Hypothesis test for proportion vs hypothesized value
Observed Hypothesized
0.97 0.95 p (as decimal)
485/500 475/500 p (as fraction)
485. 475. X
500 500 n
0.0097 std. error
2.05 z
.0201 p-value (one-tailed, upper)
0.9529 confidence interval 97.5% lower
0.9871 confidence interval 97.5% upper
0.0171 margin of error
The P value (.0201) less than alpa (.025) Therefore we do not accept Ho
Hypothesis Test: Mean vs. Hypothesized Value
Questions 9.64
250.0000 hypothesized value
275.6600 mean med
78.1100 std. dev.
15.6220 std. error
25 n
24 df
1.643 t
.0568 p-value (one-tailed, upper)
Ho: mean is then or = 250 H1: mean is > 250
Therefore since P < alpa do not accept null hypothesis. However, the decision is close since the P vaule and alpa are very close.
Question 9.56...