The probability density function (pdf) is;
f(x)= for a ≤ x ≤ b.
while the mean is given as
And the standard deviation given as
Due to weather mark walk to school day of the 20 days in february what would be the fraction representation for the number of da
1 answer:
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Answer:
Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.
Step-by-step explanation:
We use the central limit theorem to solve this question.
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation
, a sample size larger than 30 can be approximated to a normal distribution with mean
and standard deviation
So
Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.