Ability to grow in shade may help pines found in the dry forests of Arizona resist drought. How well do these pines grow in shad
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First Factor.
Find inverse by solving for 'x'
Find inverse by solving for 'x'
Answer:
(0.0757;0.1403)
Step-by-step explanation:
1) Data given and notation
Republicans =115
Democrats=331
Independents=54
Total= n= 115+331+54=500
Confidence=0.98=98%
2) Formula to use
The population proportion have the following distribution
The confidence interval for the population proportion is given by this formula
We have the proportion of independents calculated
We can calculate
And we can find , with this value we can find the critical value
using the normal distribution table, excel or a calculator.
On this case
3) Calculating the interval
And now we can calculate the interval:
So the 98% confidence interval for this case would be:
(0.0757;0.1403)