Each year the residents of a country purchase 60 billion ice cream cones. If there are 252 million people in the country, how m
1 answer:
Each year the residents of a country purchase 60 billion ice cream cones. If there are 252 million people in the country, how many ice cream cones are purchased per person in one year?
Answer: Number of ice cream cones purchased by the residents = 60 billion
60 billion = 60,000,000,000
Number of residents in the country = 252 Million
252 Million = 252,000,000
Therefore, the number of ice cream cones purchased per person in one year is:
ice cream cones
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Answer:
By the Central Limit Theorem, the mean is 78, the standard deviation is and the shape is approximately normal.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes 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.
Mean of 78 and a standard deviation of 6
This means that
Samples of n:
This means that the standard deviation is:
What are the mean, standard deviation, and shape of the distribution of x-bar for n?
By the Central Limit Theorem, the mean is 78, the standard deviation is and the shape is approximately normal.