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adelina 88 [10]
3 years ago
8

The age that women in Virginia decide to get married for the first time is normally distributed with an average of 26.3 years an

d a standard deviation of 3.1 years. Suppose that 25 Virginian women are randomly selected and asked about their age at the beginning of their first marriage, find the probability that the sample mean age is between 25 and 28 years
a.0.9821
b.0.6400
c.0.9790
d.0.9969
Mathematics
1 answer:
Nuetrik [128]3 years ago
3 0

Answer:

The answer is 0.9789 approximately equal to 0.9790

Step-by-step explanation:

See the attached files for the details, hope it is clearly understood.

Download pdf
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> pdf </span>
4f5c24a39cc9fe2c66cb13edb93a2404.png
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Can someone please give me the answer . help me understand
stira [4]

Answer:

x = 25

Step-by-step explanation:

Interior angles of a triangle = 180°

3x  + 67 + 38 = 180 \\ 3x + 105 = 180 \\ 3x = 180 - 105 \\ 3x = 75 \\  \\ x =  \frac{75}{3}  \\  \\  x = 25

I hope I helped you^_^

3 0
3 years ago
What is 44.586 the nearest tenth hundred and whole number
mestny [16]
Tenth:44.600
What is in the tenths place? The 5.
What is to the right of it?
The 8
Since the 8 is bigger than 5 you have to round up

Hundredth: 44.590
What is in the hundredth place?
The 8
What is to the right?
A 6
Since 6 is bigger than 5 you have to round up

Whole: 45
This us the same thing as rounding to the ones place.
What is in the ones place?
The second 4
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Since the 5 is big enough, it forces the 4 to round up.
6 0
4 years ago
Read 2 more answers
7. Find an equation of the line that has slope - 2/3 and which passes through (-1,-4)
labwork [276]

Answer:

y+4=-2/3 (x+1)

Step-by-step explanation:

-1 = x1

-4 = y1

m = -2/3

slope - intercept form = y - y1 = m(x - x1)

y-(-4) = -2/3(x - (-1))

y + 4 = -2/3(x +1)

3 0
3 years ago
The equation cos (35 degree) equals StartFraction a Over 25 EndFraction can be used to find the length of Line segment B C. What
valentinak56 [21]

Incomplete Question the complete Question with figure is below.

Answer:

Therefore the length of line Segment BC is 20.5 in.

Step-by-step explanation:

Given:

In Right Angle Triangle ABC

∠C = 90°

∠B = 35°

BC = a

AB = hypotenuse = 25

\cos 35\°=\dfrac{a}{25}

To Find:

BC = ?

Solution:

In Right Angle Triangle ABC , Using Cosine Identity we get

\cos B = \dfrac{\textrm{side adjacent to angle B}}{Hypotenuse}\\

Substituting we get

\cos 35 = \dfrac{a}{25}\\\\a=25\times 0.8191=20.47\\\\a=20.5\ in

Therefore the length of line Segment BC is 20.5 in.

5 0
3 years ago
Read 2 more answers
a fish tank is 50 cm long, 30 cm wide, and 40 cm high. It contains water up to a height of 28 cm. How many more cubic centimeter
leva [86]
Surface area = 50 x 30 = 150
Per cm of height 150 cubic cm needed
7cm height needed
150 x 7 = 1050 cubic cm needed
6 0
3 years ago
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