Simplify the following expression.<br> X -2/3 . X 6/7

The weight of people in a small town in missouri is known to be normally distributed with a mean of 154 pounds and a standard de

ad-work [718]

If a random sample of 20 persons weighed 3,460, the sample mean x-bar would be 3460/20 = 173 pounds.
The z-score for 173 pounds is given by:
$z=\frac{173-154}{29}=0.655$
Referring to a standard normal distribution table, and using z = 0.66, we find:
$P(\bar x\ \textless \ 173)=0.7454$
Therefore
$P(\bar x\ \textgreater \ 173)=1-0.7454=0.2546$
The answer is: 0.2546

4 0

4 years ago

Can u pls help me with this question asap

alexgriva [62]

Answer:

I think its b sorry if its wrong tho

3 0

3 years ago

Will sells 35 liters of milk in a day. how many liters of milk will be sold if he has to sell 125% more milk per day?

sammy [17]

35/100 = 0.35
0.35 x 125 = 43.75

43.75 litres per day

7 0

3 years ago

3a^2+4b^2 for a=2 and b=3

blagie [28]

First write the question:
3a^2 + 4b^2

Substitute:
3 x (2^2) + 4 x (3^2)

Simplify:
(3 x 4) + (4 x 9)

Simplify again:
12 + 36

Answer:
48

Hope it helped :)

4 0

3 years ago

Read 2 more answers

Can someone help (8 grade math)

adoni [48]

Answer:

B) 110.92 u²

Step-by-step explanation:

to find the surface area, find the area of each side and add them together.

here are all 6 sides:

4.5 * 6.8

4.5 * 2.2

2.2 * 6.8

4.5 * 6.8 = 30.6

4.5 * 2.2 = 9.9

2.2 * 6.8 = 14.96

30.6 + 30.6 + 9.9 + 9.9 + 14.96 + 14.96

110.92

7 0

3 years ago

Simplify the following expression. X -2/3 . X 6/7