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polet [3.4K]
2 years ago
11

Hiioo! Could someone please help me with thisIf you can’t see the picture I will gladly explain in the comments❤️

Mathematics
1 answer:
ElenaW [278]2 years ago
7 0
The answer is the letter B, 30
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About % of the area under the curve of the standard normal distribution is between z = − 0.9 z = - 0.9 and z = 0.9 z = 0.9 (or w
prisoha [69]

Using the normal distribution, it is found that 63.18% of the area under the curve of the standard normal distribution is between z = − 0.9 z = - 0.9.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The area within 0.9 standard deviations of the mean is the <u>p-value of Z = 0.9(0.8159) subtracted by the p-value of Z = -0.9(0.1841)</u>, hence:

0.8159 - 0.1841 = 0.6318 = 63.18%.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0
1 year ago
Help will mark brainliest
kirill [66]

Answer:

- 1 4/5

Step-by-step explanation:

-1 1/5 + - 3/5

Since the signs are the same, we add and take the sign

1 1/5 + 3/5

1 4/5

The sign is negative

- 1 4/5

On the number line start at - 1 1/5 and go to the left 3/5( since the sign is negative)  you will end up at - 1 4/5

8 0
3 years ago
Plz help me!!!!!!!!!!!
Elenna [48]

Answer:

triangle d

Step-by-step explanation:

it seems as though the others are right triangles are close to it, except for d

8 0
3 years ago
Read 2 more answers
A car is designed to last an average of 12 years with a standard deviation of 0.8 years. What is the probability that a car will
Scorpion4ik [409]
Due to the common probability formula I can solve that task. Refering to the task you gave, we have all the information we need. We solve it like that: \frac{10-12}{0.8} = -2.5; Probability(-2.5)=.0.00621; Probability = 0.621%
So the answer is the first option <span>0.621%</span>
5 0
3 years ago
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The corners of the vertices of CDE are c(1,4) d(3,7) e(7,4). if a triangle is reflected over the line y=3 what are the coordinat
skelet666 [1.2K]

The answer is (3,-1)

7 0
3 years ago
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