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otez555 [7]
2 years ago
8

In the standard normal curve, the mean is____ and a standard deviation of ____ .

Mathematics
1 answer:
mariarad [96]2 years ago
3 0

Answer:

Standard normal curve is 0.

Standard deviation is 1.

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sergey [27]

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2 years ago
At a local fair, 194 balloons are blown up. over the course of the day, 85 of them are given away to children and another 38 of
kaheart [24]

Answer:

74

Step-by-step explanation:

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3 years ago
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Alekssandra [29.7K]
33/40 is the experimental probability.
8 0
3 years ago
What’s the correct answer for this?
slava [35]

Answer:

1/4

Step-by-step explanation:

Let's denote the probabilities as following:

Probability that a teenager has a sister:

P(A) = 12/28

Probability that a teenager has a brother:

P(B) = 7/28

Probability that a teenager has both a sister and a brother:

P(A⋂B) = 3/28

Probability that a selected teenager has a sister also has a brother, or in other words, he/she has a brother, given he/she had a sister:

P(B|A)

Let's apply the formula of conditional probability to work out P(B|A)

P(B|A) = P(A⋂B)/P(A) = (3/28)/(12/28) = (3*28)/(12*28) = 3/12 = 1/4

=> Option C is correct

Hope this helps!

7 0
3 years ago
Determine the implied domain of the following function. Express your answer in interval notation.
Mandarinka [93]

Answer:

(-♾, ♾)

Step-by-step explanation:

A quadratic can accept any real x value. So the domain is All Real Numbers. This in interval notation is

(-♾, ♾)

This is read as negative infinity to positive infinity

6 0
2 years ago
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