Kaylee decided to donate 30% of her savings if she has $238 in her savings account about how much will she Donate
1 answer:
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Answer:
a)
b)
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".
Let X the random variable that represent the mean life span of a brand name tire, and for this case we know the distribution for X is given by:
Part a
We want this probability:
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:
Part b
Let represent the sample mean, the distribution for the sample mean is given by:
On this case
We want this probability:
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:
The percent of owns home is 65.51% and percent of rents home is 34.48% if the total number of US households is 116.
<h3>What is percentage?</h3>It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.
The question is incomplete.
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From the table:
Total number of US households = 71+13+5+27 = 116
Owns home = 71+5 = 76
Percent of owns home = (76/116)×100 = 65.51%
Rents home = 13+27 = 40
Percent of rents home = (40/116)×100 = 34.48%
Thus, the percent of owns home is 65.51% and percent of rents home is 34.48% if the total number of US households is 116.
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