You are hanging 3 display shelves with the same width on a wall so that there is 18 inches of space above each shelf for placing
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Answer:
The sampling distribution of the sample mean of size 30 will be approximately normal with mean 15 and standard deviation 2.19.
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 the population, we have that:
Mean = 15
Standard deviaiton = 12
Sample of 30
By the Central Limit Theorem
Mean 15
Standard deviation
Approximately normal
The sampling distribution of the sample mean of size 30 will be approximately normal with mean 15 and standard deviation 2.19.
Answer:
70%
Step-by-step explanation:
<u><em>Calculate</em></u>
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<u><em>Cross out the common factor</em></u>
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<u><em>Multiply a number to both the numerator and the denominator</em></u>
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<u><em>Write as a single fraction</em></u>
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<u><em>Calculate the product or quotient</em></u>
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<u><em>Calculate the product or quotient</em></u>
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<u><em>Rewrite a fraction with denominator equals 100 to a percentage</em></u>
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<em>I hope this helps you</em>
<em>:)</em>