Answer:
The answer is 
Step-by-step explanation:
If we assume that people cannot taste a difference between bottled water, then the probability of identifying tap water is 0.5
Thus, P(identify tap water)=0.5
The probability that at least 8 of the 9 people identify the tap water correctly is the sum of the probabilities
- 8 of 9 people identified correctly or
- 9 of 9 people identified correctly
Since P(identify tap water)=0.5 each probabilities are the same and equal to
=
So we have
= 
Answer:
See below.
Step-by-step explanation:
Either 3 packets of 6 pens or
2 packets of 9 pens.
The answer to this question is the mean increases by 3.
True, because they make up the two line segments make up the right angle
Question 9:
cos x = 10/36
Take the inverse on both sides.
arccos(cos x) = arccos(10/36)
x = 73.8723797868
x = 73.87
Question 10:
tan 89 = x
57.2899616308 = x
57.29