A rectangular prism is 4 cm long, 3 cm wide and 8 cm tall. What is the volume of the prism?
2 answers:
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Answer: B) 67%
<u>Step-by-step explanation:</u>
Find the Area of the Bullseye and Middle ring
A = π r²
A (inside) = π(8)² = 64π
Find the Area of the entire Target
A (target) = π (14)² = 196π
Find the Area of the Outer ring
A (outer ring) = A (target) - A(inside)
= 196 π - 64π
= 132 π
The last step is to find the probability of landing on the outer ring:
Answer: (0.1658, 0.2742)
Step-by-step explanation:
Formula to find the confidence interval for population proportion is given by :-
, where n= sample size
z*= Critical value
= sample proportion.
As per given , we have
Significance level :
According to z-table, Critical value for 99% confidence interval : z*=2.576
Let p be the proportion of people in the country that have red hair.
n= 388
Now, required confidence interval for proportion of people in the country that have red hair will be :-
The 99% confidence interval for the proportion of people in the country that have red hair= (0.1658, 0.2742)