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bonufazy [111]
3 years ago
11

Please solve these two questions!

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
8 0
What two question lol
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A recent study reported that diastolic blood pressures of adult women in the United States are approximately normally distribute
Zina [86]

Answer:

Proportion of women having blood pressures between 88.1 and 89.4 is 3.99% or close to 4%.

Step-by-step explanation:

We are given that a recent study reported that diastolic blood pressures of adult women in the United States are approximately normally distributed with mean 80.3 and standard deviation 8.6.

Let X = blood pressures of adult women in the United States

So, X ~ N(\mu=80.3,\sigma^{2} =8.6^{2})

The z score probability distribution is given by;

              Z = \frac{X-\mu}{\sigma} ~ N(0,1)  

where, \mu = population mean

           \sigma = population standard deviation

So, Probability that women have blood pressures between 88.1 and 89.4 is given by = P(88.1 < X < 89.4) = P(X < 89.4) - P(X \leq 88.1)

   P(X < 89.4) = P( \frac{X-\mu}{\sigma} < \frac{89.4-80.3}{8.6} ) = P(Z < 1.05) = 0.85314

   P(X \leq 88.1) = P( \frac{X-\mu}{\sigma} \leq \frac{88.1-80.3}{8.6} ) = P(Z \leq 0.89) = 0.81327

Therefore, P(88.1 < X < 89.4) = 0.85314 - 0.81327 = 0.0399 or approx 4%

Hence, proportion of women have blood pressures between 88.1 and 89.4 is 4%.

7 0
4 years ago
A library building is in the shape of a rectangle. Its floor has a length of (3x + 5) meters and a width of (5x − 1) meters. The
AleksAgata [21]
The problem says that the expression (3x + 5)(5x − 1) <span>represents the area of the floor of the building in square meters. Therefore,  to solve this problem you have to follow the proccedure shown below.

 1. First, to simplify the expression (3x + 5)(5x − 1) you must apply the distributive property. Then, you obtain:

 15x</span>²-3x+25x-5

 2. Then, you have:

 15x²+22x-5

 3. As you can see, the correct answer is the last option:  15x²+22x-5
7 0
3 years ago
Solve for x <br> abx-cdx=15m
VladimirAG [237]
X(ab-cd)=15m

x=15m/(ab-cd)
7 0
4 years ago
What is the simplified form of 5x(2x^2)
lukranit [14]
The simplified form is 20x^2. Because you 2x*2, you get 4x. You multiply that by 5x, and then you get your answer.
8 0
3 years ago
Read 2 more answers
Suppose a triangle has sides 3, 4, and 6. Which of the following must be true? A: The triangle in question is not a right triang
Talja [164]

Answer:

A: The triangle in question is not a right triangle.

Step-by-step explanation:

If the triangle is a right triangle, then the Pythagorean theorem would hold

a^2 + b^2 = c^2

3^2 + 4^2 = 6^2

9+16 = 36

25 = 36

This is not true so this is not a right triangle

7 0
3 years ago
Read 2 more answers
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