Answer:
12
Step-by-step explanation:
60% of $12
(60 × 20) ÷ 100 = 12
The answer is 13..................
1) Answer:
<u>Step-by-step explanation:</u>
f(x) = 6x⁻¹
f'(x) = -6x⁻²
=
f'(-2) =
=
=
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2) Answer:
<u>Step-by-step explanation:</u>
f(x) = -9x⁻¹
f'(x) = 9x⁻²
=
f'(6) =
=
=
Answer: No, the average age is not higher than originally believed.
Step-by-step explanation:
Since we have given that
Sample size = 20
Mean = 63.7 years
Standard deviation = 1.9 years
So, Hypothesis:
So, the value of test statistic would be
At α = 0.01 level of significance,
critical value z = 2.58
Since 2.58>0.471
so, We will accept the null hypothesis.
Hence, No, the average age is not higher than originally believed.
Answer:
I'm pretty sure it is
Step-by-step explanation: