(a)
0.2
Sample size
320
Estimated p
0.256
Test statistic
2.516
pvalue
0.006
α
0.050
αlevel critical value
1.645
Yes since 2.52 > 1.65
(b)
0.200
Sample size
320
Estimated p
0.256
Test statistic
2.516
pvalue
0.012
α
0.050
αlevel critical value
1.960
1.960
1α confidence interval
Upper limit
0.300
Lower limit
0.212
95 % confidence interval = (0.21, 0.30)
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '10
 unknown
 Statistics, Statistical hypothesis testing

Click to edit the document details