Answer:
D. 0.98
Step-by-step explanation:
We have been given that the fish population in a lake decreases by 2% each year. We are asked to find the common ratio.
The fish population is decreasing 2% each year. This means that each next year the fish population is 98% (100-2) of the fish population of last year.
So the common ration would be 98%. Upon converting 98% in decimal we will get,
Therefore, common ration is 0.98 and option D is the correct choice.
Answer:
Step-by-step explanation:
Given that X is a normal random variable with parameters µ = 10 and σ 2 = 36,
X is N(10, 6)
Or z =
is N(0,1)
a) P(X > 5),
=
(b) P(4 < X < 16),
=
(c) P(X < 8),
=
(d) P(X < 20),
=
(e) P(X > 16).
=P(Z>-0.6667)
= 0.2524
Answer:
10.63
Step-by-step explanation:
Data provided in the question
Data = 30 subjects
The Variance of scores = 113.00
The calculation of standard deviation is shown below:-
As we know that
Variance = Standard deviation^2
Therefore,
Standard deviation =
=
= 10.63
Therefore for computing the standard deviation we simply applied the above formula.
Hence, value of