Answer:
a)
With:
b)
c)
d)
Step-by-step explanation:
For this case we know the following propoertis for the random variable X
We select a sample size of n = 81
Part a
Since the sample size is large enough we can use the central limit distribution and the distribution for the sampel mean on this case would be:
With:
Part b
We want this probability:
We can use the z score formula given by:
And if we find the z score for 89 we got:
Part c
We can use the z score formula given by:
And if we find the z score for 75.65 we got:
Part d
We want this probability:
We find the z scores:
Answer:
Step-by-step explanation:
<u>We observe two angles and the included side of ABC are congruent to two angles and the included side of DBE:</u>
This is called ASA
Answer:
The answer is 190mm2
Step-by-step explanation:
(3x5)x2 30
(3x10)x2 60
(5x10)x2 100
add them all up to get 190
Answer:
0.7
Step-by-step explanation:
To get 7/10 as a decimal you simply divide 7 by 10 which gets you 0.7.
Answer:
ok
Step-by-step explanation: