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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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PLZ help i do know the answer to this already from another brainly question but i just would like to understand how its solved s
amm1812

Answer:

  • 66.56 cm

Step-by-step explanation:

<u>The figure consist of:</u>

  • 1. A rectangle with sides 10 cm and 17 cm
  • 2. A quarter circle

<u>The perimeter is:</u>

  • P = 1/4C + 2*10 + 17 + (17 - 8) + 8
  • P = 1/4*2*3.14*8 + 54 = 66.56 cm
4 0
3 years ago
Select the line plot with a median score of 6.
mafiozo [28]
Answer: top left
Reason: all plots have twenty dots. Count from either side. If the tenth and eleventh are both on six than that plot is correct. Top left is the only one like that. (the median of 20 being between 10 and 11)
6 0
2 years ago
Read 2 more answers
Help please need done asap
vodka [1.7K]

Answer:

Answer is J

Step-by-step explanation:

Find one point: (1,0)

Substitute the numbers in the equations.

0+6= 3(1+1)

6= 3(2)

6=6

8 0
3 years ago
What is the reciprocal of 13/14
Vesna [10]

Answer:

14/13

Step-by-step explanation:

the reciprocal is the fraction upside down.

5 0
2 years ago
Read 2 more answers
What is a quotient of a number and 15?
Alenkinab [10]

Answer:450 i think


Step-by-step explanation:

Quotient' means you will divide the numbers.

Also, to be 'no greater' means to be 'less than or equal to'.

6 0
3 years ago
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