Solve for indicated side Your Answer: Question 4 options: Answer
2 answers:
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Answer:
The standard error of the proportion is 0.0367.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the standard error is
In this question:
So
The standard error of the proportion is 0.0367.
Answer:
x = ± 2
Step-by-step explanation:
x² + 1 = 25 ( subtract 1 from both sides )
x² = 24 ( take square root of both sides )
x = ± = ±
=
×
= ± 2
x = - 2 , x = 2