Using the Empirical Rule, it is found that 229 batteries have lifetimes between 3.0 hours and 3.4 hours.
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By the Empirical Rule, in a normal variable: 68% of the measures are within 1 standard deviation of the mean, 95% are within 2 and 99.7% are within 3.
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- Mean of 3.2 hours with a standard deviation of 0.2 hours.
3 = 3.2 - 2(0.1)
3.4 = 3.2 + 2(0.1)
- Thus, between 3 and 3.4 hours is <u>within 2 standard deviations of the mean</u>, which is 95%.
- Out of 241 batteries:
229 batteries have lifetimes between 3.0 hours and 3.4 hours.
A similar problem is given at brainly.com/question/24552083
Answer:
You click the crown on an answer. you can practice on mine ;)
Step-by-step explanation:
9514 1404 393
Answer:
x ≈ -4.9
Step-by-step explanation:
There are no algebraic methods for solving this equation. The solution is nicely found by a graphing calculator.
x ≈ -4.9
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Using iterative techniques, the calculator can give an answer to the full precision available. It is ...
x ≈ −4.91733286844
Answer:
I'm not completely sure but in my opinion I think the answer is that the Associated store has the better buy for oranges! :-)
Step-by-step explanation:
Because they have $3.00 for five pounds and the shoprite store has 2.59 for 4 pounds, but if you where to buy a fifth one at the Shoprite store then you would have to pay more for 5 pounds of oranges then you would for the 5 pounds of oranges at the Associated store.
Hope this helps! Please mark me brainliest! :-)))))))
