Answer:
93.19%
Step-by-step explanation:
We have that the mean (m) is equal to 70.4, the standard deviation (sd) 11.1 and the sample size (n) = 140
They ask us for P (x =69)
For this, the first thing is to calculate z, which is given by the following equation:
z = (x - m) / (sd / (n ^ 1/2))
We have all these values, replacing we have:
z = (69 - 70.4) / (11.1 / (140 ^ (1/2)))
z = 1.49
With the normal distribution table (attached), we have that at that value, the probability is:
P (z <1.49) = 0.9319
The probability is 93.19%
Answer:
0.96186974789, but can be rounded up to 1
Answer:
52$
Step-by-step explanation:
ok so 2 pins cost 4$ so if you buy one pin its 2$ correct? take 12 and multiply it by 2 and take 14 and multiply by 2,
12×2=24$
14×2=28$
add those two together and you get 52$
Answer:
Excluded values are any given number(s) that can make an expression's denominator zero.
First you set the denominator equal to zero, like so:
(x-1)(x+7) = 0
Now you can see if you make each (x-1) and (x+7) equal to zero:
<u>x-1=0 x=1</u>
<u>x+7= x=-7</u>
Excluded values:
From my understanding 1 and -7 would be the excluded values.
