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SOVA2 [1]
3 years ago
9

a company observes the lifespan of 560 lightbulbs and finds that their data follows a normal distribution. what is the approxima

te number of light bulbs that fall within two standard deviations from the mean?
Mathematics
1 answer:
quester [9]3 years ago
7 0
Empirical rule can be used to estimate the number of values that lie with 1, 2 or 3 standard deviations of a Normally distributed population.

According to the empirical rule, 95% of the values lie within 2 standard deviations of the mean.

Total number of bulbs = n = 560
95% of n = 0.95 x 560 = 532

This means, 532 bulbs will lie within 2 standard deviations from the mean 
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Find the 11th term of the geometric sequence 7, -28, 112, ...
Romashka-Z-Leto [24]

Answer:

-7,340,032

Step-by-step explanation:

3 0
3 years ago
A delivery to the flower shop is recorded in the chart above. The shop makes centerpiece arrangements using 36 flowers that are
Alchen [17]

Answer:

yes, they will be able to make at least 10 arrangements using each type of flower

no, they will not be able to make 100 arrangements using each type of flower.

Step-by-step explanation:

Explain your thinking: The shop makes arrangements with only the same type of flower. We know that each arrangement requires 36 flowers. By analyzing the data, we can see how many arrangements they can make based on each flower type.

There are 580 tulips - and we need 36 per arrangement

580/36= 16 arrangements of tulips

There are 2,410 daisies

2410/36= 66 arrangements of daisies

There are 4,000 carnations

4,000/36= 111 arrangements of carnations.

Since there are at least 10 arrangements per set of flowers, the first statement is true (we CAN make at least 10 arrangements using each type of flower)

Since there is only 16 arrangements for tulips and 66 for daisies, we CANNOT have at least 100 arrangements per flower type

3 0
3 years ago
What is .13 repeating as a fraction
vampirchik [111]
13/100 would be it because you divide it over 100
5 0
3 years ago
Charlie and Rashan collect miniature cars. They have the same number of cars in their collections. Charlie sold 5/8 of his colle
gtnhenbr [62]

Answer:

5/8 is more than 1/2  4/10 is less than 1/2 so 5/8 is more than 4/10

So that means that Charlie sold more of his collection than Rashan

Step-by-step explanation:

Hope this helped out.

4 0
2 years ago
Which are correct representation of the inequality minus 32X -5 less than 52 minus X select two options
Murljashka [212]

Answer:

The value of X is more than equal to -1.83.

Step-by-step explanation:

We need to find the correct representation of the inequality 'minus 32X -5 less than 52 minus X'

LHS of the inequality will be : -32x-5

RHS of the inequality will be : (52-X)

So,

-32X-5\leq 52-X

Adding X both sides

-32X-5+X\leq 52-X+X\\\\-31X-5\leq 52

Adding 5 to both sides,

-31X-5+5\leq 52+5\\\\-31X\leq 57

Dividing both sides by -31.

X\geq \dfrac{-57}{31}\\\\X\geq  -1.83

So, the value of X is more than equal to -1.83.

5 0
2 years ago
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