marchellepenuliar

21.10.2020 • 

Mathematics

As part of a study to determine whether gender affects dental hygiene habits, a random sample of n = 20 men and a random sample of n = 20 women were asked "How many minutes do you typically spend brushing your teeth each day?" The sample means
of the responses are x1 = 3.6 minutes for men and x2 - 3.8 minutes for women
Assuming the distributions of time spent brushing for both men and women share a known standard deviation of o = 1.2, what is a
95% confidence interval for the difference in mean times?
A)
(-0.64, 0.24
BI
(-0.73, 0.33)
(-0.82,0.42)
D
(-0.94, 0.54)

Ответ:

cmflores3245

06.08.2021

Mathematics

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Factor out w³.



Find two numbers that multiply to equal 144 (9*16) and add to equal 24.
This would be 12 and 12.



Factor.

+16)[/tex]

Simplify.

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