Please solve this 100% correctly, Please accurately and correctly solve them with no mistake
Solution :
Given that,
n = 200
x = 108
Point estimate = sample proportion =
= x / n = 108/200=0.54
1 -
= 1-0.54 =0.46
At 90% confidence level the z is
= 1 - 90% = 1 - 0.90 = 0.1
/ 2 = 0.1 / 2 = 0.05
Z/2
= Z0.05 = 1.645 ( Using z table )
Margin of error = E Z/2
*
((
* (1 -
)) / n)
= 1.645 *((0.54*0.46)
/200 )
= 0.0580
A 90% confidence interval for population proportion p is ,
- E < p <
+ E
0.54-0.0580 < p <0.54+ 0.0580
0.4820< p < 0.5980
The 90% confidence interval for the population proportion p is : 0.4820, 0.5980
Please solve this 100% correctly, Please accurately and correctly solve them with no mistake Question 3...
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