What is A number divided by 82
2 answers:
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Answer:
The mean of the sampling distribution of p is 0.75 and the standard deviation is 0.0306.
Step-by-step explanation:
Central Limit Theorem:
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean and standard deviation
75% of teenagers in North America are pursuing a goal they have set for themselves.
This means that
Sample of 200.
This means that .
What are the mean and standard deviation of the sampling distribution of p?
By the Central Limit Theorem
Mean
Standard deviation
The mean of the sampling distribution of p is 0.75 and the standard deviation is 0.0306.
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Answer:
The probability that the time between the next two calls is between 3 minutes and 7 minutes is 0.2442.
Step-by-step explanation:
Let <em>X</em> = time between calls made to Amazon's customer service.
The average time between calls is, <em>β</em> = 10 minutes.
The random variable <em>X</em> follows an Exponential distribution with parameter
The probability distribution function of <em>X</em> is:
Compute the probability that the time between the next two calls is between 3 minutes and 7 minutes as follows:
Thus, the probability that the time between the next two calls is between 3 minutes and 7 minutes is 0.2442.