Just tell me if these soccer balls show a reflection. Its for a math assignment i just need to know if this shows a reflection
2 answers:
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Answer:
a)
b)
Step-by-step explanation:
1) 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".
2) Part a
Let X the random variable that represent the duration of a safe dosage of pain relief drug, 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 on this way:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.
3) Part b
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 on this way:
The adult weight in pounds is 185.39 lb
<u>Solution:</u>
Given that adult weighs 84.09 kilogram
To find : Adult’s weight in kilograms to pounds
We have the change the weight of the adult from kilogram to pound
The conversion between kilogram and pound is as follows:-
1 kilogram = 2.204623 lb
To find the adult weight in pound, we need to multiply the adult weight in kilogram by 2.204623
<em><u>Converting 84.09 kg to pound:</u></em>
Therefore the weight of the person in pound = 185.39 lb