Simplify the expression -3 ÷ (-2/5
1 answer:
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Answer:
Step-by-step explanation:
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".
The population proportion have the following distribution
And we can solve the problem using the z score on this case given by:
We are interested on this probability:
And we can use the z score formula, and we got this:
And we can find this probability like this:
Answer:
a)
b)
c), Yes;
Step-by-step explanation:
Michael's Weight:
Al's weight:
a) Ratio of Michael's weight to Al's weight:
b) This ratio simplifies to:
c) Yes, If the exponent in each expression were negative, then we have:
Ratio of Michael's weight to Al's weight:
This ratio simplifies to:
The two ratios are not the same.