3 years ago

Find x if the mean of the given data is 7. x 12 3 4 3 8 5 11

Mathematics

1 answer:

Vladimir [108]3 years ago

6 0

Answer:

x=10

Step-by-step explanation:

12+3+4+3+8+5+11+10/8=7

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astraxan [27]

Step-by-step explanation:

$gradient \: = \: \frac{y2 - y1}{x2 - x1}$

y2 = y , x2 = 5

y1 = 2 , x1 = 3

$- 2 \: = \: \frac{y - 2}{5 - 3}$

-4 = y-2 ==> y = -2

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3 years ago

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The Orchard Cafe has found that about 3% of the diners who make reservations don't show up. If 83 reservations have been made, h

daser333 [38]

Answer:

$\mu = 80.51\\\sigma = 1.56$

Step-by-step explanation:

We are given the following information in the question:

Percentage of of the diners who make reservations don't show up = 3%

Number of reservations = 83

Thus, we are given a binomial distribution with n = 83 and p = 0.97

$X\sim \text{ Binom}(p = 0.97, n = 83)$

$\mu = np = (83)(0.97) = 80.51$

Around 81 people can be expected to show up.

$\sigma = \sqrt{np(1-p)} = \sqrt{(83)(0.97)(1-0.97)} = 1.5541 \approx 1.56$

The standard deviation of this distribution is 1.56

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2 years ago

Question Progress

vredina [299]

Step-by-step explanation:

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3 years ago

If W + 6 = 3 and v-4 = 2, what is the value of w + v?

OLEGan [10]

Answer:

w = - 3 and v = - 2

Step-by-step explanation:

Because w + 6 = 3 you would subtract 6 and whatever you do to one side you would do to the other.

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vlabodo [156]

Answer:

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2 years ago