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aev [14]
3 years ago
11

Help on second question ​

Mathematics
1 answer:
Anna35 [415]3 years ago
3 0

Answer:

0.36

Step-by-step explanation:

you add the probability's together

quite simple really. -3-

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If the dot product of two nonzero vector v1 and v2 is zero, what dose this tell us
tino4ka555 [31]

It means that the two vectors are perpendicular or orthogonal

3 0
3 years ago
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For women aged 19-24, systolic blood pressures (in mm Hg) are normally distributed with a mean of 114.8 and a standard deviation
Mrac [35]

Answer: p = 0.00714

Step-by-step explanation:

Since the population standard deviation of the distribution is known, the z test ( which produces the z score) is the perfect test for finding the probability of the data set in the question.

From the question,

Population mean (u) = 114.8

Sample mean (x) = 121.5

Population standard deviation (σ) = 13.1

Sample size (n) = 23

The z score formulae is given below as

Z = x - u/σ/√n

Z = 121.5 - 114.8/(13.1/√23)

Z = 6.7/(13.1/√23)

Z = 6.7/2.731

Z = 2.45.

The question is interested in knowing the probability of mean systolic blood pressure greater than 121.5.

This implies that we are looking for the probability at which our z score is greater than 2.45: P(z>2.45)

The z score (z=2.45) has divided the distribution into two regions, z< 2.45 ( area to the left of the distribution) and z>2.45 ( area to the right of distribution).

Hence, p(z>2.45) + p(z<2.45) = 1

To get a the probability, we have to use a standard normal distribution table.

The table we have here gives probability of the distribution to the left ( that's area towards the left), hence we need to find p(z<2.45) first

From the table p(z<2.45) = 0.99286

But p(z>2.45) = 1 - p(z<2.45)

p(z>2.45) = 1 - 0.99286

p(z>2.45) = 0.00714

8 0
3 years ago
Please explain the steps or this equation 3+p=8
ladessa [460]

Answer:

5

Step-by-step explanation:

We can subtract both sides of the equation by 3, getting 3 + p - 3 = 8 - 3.

Then we can evaluate, getting p = 8 - 3 = 5.

3 0
3 years ago
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Please help asap 50 pts
grigory [225]
|-1/5| < |-1/3| < |-7|

Your answer:

B. y = -1/5 x^2; y = -1/3 x^2; y = -7x^2

Look at the picture.

5 0
3 years ago
Help ASAP please(this is filler so that i can post this)
AfilCa [17]

Answer:

I cant see your post...

Step-by-step explanation:


5 0
3 years ago
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