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guapka [62]
3 years ago
9

Suppose that a certain brand of light bulb has a mean life of 450 hours and a standard deviation of 73 hours. Assuming the data

are bell-shaped: (Show work to get full credit)
a. Would it be unusual for a light bulb to have a life span of 320 hours? 615 hours? Justify each response.
b. According to the Empirical Rule, 99.7% of the light bulbs have a lifetime between what two values?
c. Determine the percentage of light bulbs that will have a life between 304 and 596 hours.
Mathematics
1 answer:
Mrac [35]3 years ago
4 0

Answer:

yes it is correct

Step-by-step explanation:

plz give brainliest.

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Answer:

1/2

Step-by-step explanation:

1/2=10/20

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Ipatiy [6.2K]

Answer:

I used the answer the other person gave, but it said it was wrong. Here was the answer I put in the second time.

Step-by-step explanation:


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A segment has endpoints (14,-8) and (4, 12). What are the coordinates of<br> its midpoint?
lutik1710 [3]

Answer:

(9,2)

Step-by-step explanation:

To find the x coordinate of the midpoint, average the x coordinates of the endpoints

(14+4)/2 = 18/2 = 9

To find the y coordinate of the midpoint, average the y coordinates of the endpoints

(-8+12)/2 = 4/2 = 2

3 0
2 years ago
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Vitek1552 [10]
Well, we could use S for strawberries and A for apples.
So it would be: 3S=A
And in total there are 52 fruits so:
52=S+A
8 0
3 years ago
Determine the number of degrees in 8π/9 radians​
snow_tiger [21]

Answer:

π radians=180°(basic definition) 8π9 radians=89⋅180∘=160∘

Hope this helps!! If so please mark brainliest and rate/heart to help my account if it did!!

6 0
3 years ago
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