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Daniel [21]
3 years ago
8

A sleep study found that the number of hours each person slept was normally

Mathematics
1 answer:
kifflom [539]3 years ago
8 0

Answer:

6.1-10.3

Step-by-step explanation:

Multiply standard deviation times 3 = 2.1

Subtract and add to mean.

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In a batch of 440 water purifiers, 8 were found to be defective. What is the probability that a water purifier chosen at random
LiRa [457]

Answer:

1.8% or 1.818181%

Step-by-step explanation:

If in a batch of 440 water purifiers, we find 8 to be defective.

Then the probability of the next purifier being defective is 8/440

In percentage = 8/440 * 100

=> 8/44 * 10

=> 8/22 * 5

=> 40/22

=> 20 / 11

20/11 is roughly 1.8181818

Rounding it to the nearest tenth, we get 1.8%

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

3 0
3 years ago
The expression 20z−8 factored using the GCF is
Free_Kalibri [48]

GCF of 20 and 8 is 4

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3 years ago
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Korolek [52]
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3 years ago
AABC is reflected across the x-axis. What is the new location of point B? A (-4, -2) C (4, -2) B (-4,2) D (4,2)​
Molodets [167]

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D (4,2)

Step-by-step explanation:

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7 0
3 years ago
Simplify the following fraction 4½-2⅝​
Sophie [7]

Answer:

Step-by-step explanation:

4 1/2 - 2 5/8

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3 years ago
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