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3 years ago

Evalúa 9-b cuando b=8

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

8 0

Answer:

Solution,

b=8

Now,

9-b

=9-8

=1

Hope this helps...

Good luck on your assignment...

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Listed below are pulse rates (beats per minute) from samples of adult males and females. Does there appear to be a difference

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Answer:

There appears to be a difference between the pulse rates from samples of adult males and females. The average pulse rate of males is 63.75 while that of females is 75.875.

Coefficient of Variation (male) = 33.44%

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Mean (male) = $\frac{sum of x}{n} =\frac{1020}{16} =63.75$

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Standard Deviation (male) = $\sqrt{\frac{sum(x-63.75)^2}{16-1} } =21.315$

Standard Deviation (female) = $\sqrt{\frac{sum(y-75.875)^2}{16-1} } = 21.512$

Coefficient of Variation = $\frac{Std dev}{mean} *100$

For male, CV = $\frac{21.315}{63.75} *100=33.44%$ %

For female, CV = $\frac{21.512}{75.875} *100=28.35$ %

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