Susan makes 5 fruit cups for the picnic. In each cup, she has 5 strawberries and 3 kiwi. Joanna uses the same number of total fr
uits to make her stawberry and kiwi fruit cups, but she makes 4 cups. In each cup, she uses 8 strawberries.
How many kiwis are in each fruit cup Joanna makes?
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How many kiwis are in each fruit cup Joanna makes?
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2 answers:
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Answer:
And we can find this probability with the complement rule and we got:
And using the normal standard table or excel we got:
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the prices of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability with the complement rule and we got:
And using the normal standard table or excel we got:
And we can find this probability on this way: