Nd Practice
1 answer:
Answer:
a. Factor (divisor).
b. Factor (divisor).
c. Multiple.
Step-by-step explanation:
Given the algebraic expression;
28 = 7 * 4
We can re-write the expression as;
1.
2.
Hence, we can deduce the following points from the above algebraic expression;
a) With respect to 28, 4 represents a factor or divisor.
b) With respect to 28, 7 represents a factor or divisor.
c) With respect to each of the numbers 7 and 4, 28 represents a multiple.
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Answer:
And the explanation of this number is:"The number of text messages for Kendra it's 2.26 deviations above the mean"
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) Calculate the z score
Let X the random variable that represent the number of text messages per month, and for this case we know the distribution for X is given by:
Where and
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 the explanation of this number is:"The number of text messages for Kendra it's 2.26 deviations above the mean"