Asked by Morgan
We observe a sample proprotion p-hat = 0.3. If the standard deviation of the sampling distribution of p-hat is 0.04, what is the 95% confidence interval for p?
Answers
Answered by
Morgan
CI=point estimate +- (z)(standard deviation)
CI= 0.3 +- (1.96)(0.04)
CI= 0.3 +- 0.0784
CI= 0.3 - 0.0784
CI= 0.3 + 0.0784
CI= (0.2216, 0.3784)
CI= 0.3 +- (1.96)(0.04)
CI= 0.3 +- 0.0784
CI= 0.3 - 0.0784
CI= 0.3 + 0.0784
CI= (0.2216, 0.3784)
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