1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
loris [4]
2 years ago
10

The lifetimes of light bulbs of a particular type are normally distributed with a mean of 350 hours and a standard deviation of

6 hours. What percentage of the bulbs have lifetimes that lie within 1 standard deviation to either side of the mean?
Mathematics
1 answer:
musickatia [10]2 years ago
5 0

Answer:

By the Empirical Rule, approximately 68% of the bulbs have lifetimes that lie within 1 standard deviation to either side of the mean.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

What percentage of the bulbs have lifetimes that lie within 1 standard deviation to either side of the mean?

By the Empirical Rule, approximately 68% of the bulbs have lifetimes that lie within 1 standard deviation to either side of the mean.

You might be interested in
Find x in the parallelogram OA =(X+23) IN ; OC=31 in
ddd [48]
82 Europe dduuxhxxhhchcch
3 0
3 years ago
Use suitable identities to find the following products <br><br>(x-5) (x-5)​
Marrrta [24]

Step-by-step explanation:

(x - 5)(x - 5) \\  {x}^{2}  - 5x - 5x + 25 \\  {x}^{2}  - 10x + 25

I hope it makes sense

:)

7 0
3 years ago
PLEASE HELP ASAP Due in 1 day!!!
Helen [10]

Step-by-step explanation:

Q1 . (f+g)(x) = f(x) + g(x)

=4x-4 +2x^2 -3x

= 2x^2 + x -4

Q2. (f-g)(x) = f(x) - g(x)

= 2x^2−2 - (4x+1)

= 2x^2 -2 -4x -1

= 2x^2 - 4x -3

Q3. h(x)=3x−3 and g(x)=x^2+3

(h.g)(x) = h(x) × g(x)

= (3x-3) × (x^2 + 3)

=3x^3 -3x^2 + 9x -9

Q4.f(x)=x+4 and g(x)=x+6

(f/g)(x) = f(x) ÷ g(x)

= x+4 / x+6

the domain restriction is x>-6

x<-6

x doesn't equal (-6)

7 0
3 years ago
If it takes 4 gallons of gas to drive 92 miles how many miles can be driven using 6 gallons
AVprozaik [17]

Answer:

138

Step-by-step explanation:

as 92÷4 = 23 and 23x6 = 148

4 0
3 years ago
Read 2 more answers
Which coordinate is on the graph of the equation 4x-3y=8
Wittaler [7]

Answer:

Coordinates (0, -8/3)

4 0
2 years ago
Other questions:
  • Write a posite or negative number :depositing $85 in a bank account
    15·1 answer
  • ANSWER???????????????????
    7·1 answer
  • John can complete a paper route in 20 minutes. Steve can complete the same route in 30 minutes. How long will it take them to co
    8·2 answers
  • Rules for exponents help?
    11·1 answer
  • !!!!!Help!!!!
    5·1 answer
  • 13 (10+2) could be used to simplify which of the following problems
    8·1 answer
  • There is a picture below. Help me please!
    8·1 answer
  • Simplify the expression. (x-4 x² + 7) - (-5x² + 5x - 3)​
    5·2 answers
  • A bag contains 5 red marbles, 6 blue, and 4 green. If three marbles are drawn what is the probability to the nearest 10th all th
    12·1 answer
  • Hi. I'm kind of confused on this question. Pls help
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!