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Dmitrij [34]
3 years ago
13

Suppose the life of a particular brand of calculator battery is approximately normally distributed with a mean of 75 hours and a

standard deviation of 10 hours. If the manufacturer of the battery is able to reduce the standard deviation of battery life from 10 to 9 hours, what would be the probability that 16 batteries randomly sampled from the population will have a sample mean life of between 70 and 80 hours
Mathematics
1 answer:
Orlov [11]3 years ago
3 0

Answer:

idek

Step-by-step explanation:

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Katie stop erasing my questions im just trying to help idxiot
Anna007 [38]

Answer:

HEY

Step-by-step explanation:

i think so u also dont know the que

8 0
3 years ago
Help asap! will award brainly and pls explain!
cluponka [151]

This is a right angle triangle.

So, by Pythagoras theorem,

√(32^2+20^2) = x

or √(1024+400) = x

or √1424 = x

or <em>37.74 = x</em>

3 0
2 years ago
What number was the numerator and denomiator of 3/5
quester [9]

Answer:

6

Step-by-step explanation:

When you do 3×6 you get 18 and when you do 5×6 you get 30

3 0
3 years ago
If x is too small that its square and higher powers be neglected then (1+3x)-2=?
Molodets [167]

The answer is 3x - 1.

7 0
3 years ago
Which is greater 12 cups or 3 quarts
Zielflug [23.3K]

Neither is greater.

1 quart = 4 cups
2 quarts = 8 cups
3 quarts = 12 cups

So they're equal.


4 0
3 years ago
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