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4 years ago

Which dot plot represents this data set? 14, 15, 14, 19, 15, 15, 19, 12, 12, 12, 15, 17, 11, 17, 16, 18, 18

Mathematics

2 answers:

Ber [7]4 years ago

7 0

Answer:

average or the median

Step-by-step explanation:

it is either that or the average which you get by adding all of the nubmers adn dividing by 17

tatiyna4 years ago

5 0

Answer: Plot D

Step-by-step explanation:

Plot D is the one without 13. The other ones have 13 but there is no 13 in the data set.

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What percent x 2280 = 9744

Burka [1]

well, what is 9,744/2,280? take that and move the decimal point two places to the right to find the answer.

3 0

3 years ago

Consider a system with one component that is subject to failure, and suppose that we have 115 copies of the component. Suppose f

castortr0y [4]

Answer:

Step-by-step explanation:

From the given information:

the mean $(\mu) = 115 \times 20$

= 2300

Standard deviation = $20 \times \sqrt{115}$

Standard deviation (SD) = 214.4761

TO find:

a) $P(x > 3500)= P(Z > \dfrac{3500-\mu}{214.4761})$

$P(x > 3500)= P(Z > \dfrac{3500-2300}{214.4761})$

$P(x > 3500)= P(Z > \dfrac{1200}{214.4761})$

$P(x > 3500)= P(Z >5.595)$

From the Z-table, since 5.595 is > 3.999

$P(x > 3500)=1-0.9999$

P(x > 3500) = 0.0001

Here, the replacement time for the mean $(\mu) = \dfrac{0+0.5}{2}$

= 0.25

Replacement time for the Standard deviation $\sigma = \dfrac{0.5-0}{\sqrt{12}}$

$\sigma = 0.1443$

For 115 component, the mean time = (115 × 20)+(114×0.25)

= 2300 + 28.5

= 2328.5

Standard deviation = $\sqrt{(115\times 20^2) +(114\times (0.1443)^2)}$

= $\sqrt{(115\times 400) +(114\times 0.02082249}$

= $\sqrt{(46000) +2.37376386}$

= $\sqrt{(46000) +(2.37376386)}$

= $\sqrt{46002.374}$

= 214.482

Now; the required probability:

$P(x > 4125) = P(Z > \dfrac{4125- 2328.5}{214.482})$

$P(x > 4125) = P(Z > \dfrac{1796.5}{214.482})$

$P(x > 4125) = P(Z >8.376)$

$P(x > 4125) =1- P(Z$

From the Z-table, since 8.376 is > 3.999

P(x > 4125) = 1 - 0.9999

P(x > 4125) = 0.0001

7 0

2 years ago

Find the range, variance, and standard deviation for the given sample data, if possible. If the measures of variation can be o

zimovet [89]

Answer:

Range = 3

Variance = 0.6475

Standard Deviation = 0.804

Step-by-step explanation:

The steps and tables is shown in the attachment.

5 0

3 years ago

-2log5 7x=2<br><br> the 5 is small please help me

RSB [31]

-2log_5 7x = log_5 2

log_5[1/(7x)^2] = log_5 2

log_5(1/49x^2) = log_5 2

log_5(1 - 49x^2) = log_5 2

1 - 49x^2 = 2

You finish.

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3 years ago

I need help so i know what to do for test ?

Paraphin [41]

Answer:

y = -4

Step-by-step explanation:

See attached worksheet.

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2 years ago