Answer:
53% or 0.53 or 53/100
Step-by-step explanation:
45 people would be in the club
N^3 +4n^2 +8n -16
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Answer: a) 15 1/2 hours
Step-by-step explanation :
1/2 ×2=1. 1×4=4 1 1/2 ×1= 1 1/2 2×2=4. 2 1/2 ×2= 5
Add all answers and you have 15 1/2 hours.
Answer:
c. 18.36-21.64
Step-by-step explanation:
Using the following formulas the lower and upper limits of the interval are calculated
Lower limit = mean - (standard deviation /√sample size)* Zr
Upper limit = mean + (standard deviation /√sample size)* Zr
Zr depends on confidence interval
Zr for 90% = 1.645
then
Lower limit = 20 - (4 /√16)* 1.645 = 18.355 ≈ 18.36
Upper limit = 20 + (4 /√16)* 1.645 = 21.645 ≈ 21.64
