Answer:
A
Step-by-step explanation:
Sample proportional is right at the centre of the interval
p = (0.32+0 38)/2
0.7/2
0.35
A 98% confidence interval for a proportion is found to be (0.32, 0.38). sample proportion is 0.35
Option (A) is correct
"The sample proportion is a random variable: it varies from sample to sample in a way that cannot be predicted with certainty."
We have
98% confidence interval for a proportion is found to be (0.32, 0.38).
Formula for sample proportion
[tex]p^{'}[/tex] = [tex]\frac{x}{n}[/tex]
Where x represents the number of successes
n represents the sample size
Sample proportion is right at the center of the interval
[tex]p^{'} = \frac{0.32+0.38}{2}[/tex]
⇒ [tex]p^{'} =\frac{0.7}{2}[/tex]
⇒ [tex]p^{'} = 0.35[/tex]
Hence, sample proportion is 0.35.
Option (A) is correct.
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