0.1111 if you want it as a decimal
Answer:
97
Step-by-step explanation:
Given that:
Low = 43bpm
High = 115 bpm
Error = 3
α = 90%
To find the range estimate :
Standard destviation = (high - low) / 4
Standard deviation = (115 - 43) / 4
Standard deviation = 72/4 = 18
The sample size,(n) :
n = [(Zα/2 * sd)/E] ²
2 - tail = (Zα/2) = 1.645
[(Zα/2 * sd)/E] ² = [(1.645 * 18) / 3]² = (29.61/3)²
= 97.41
Sample size = 97
$19/1.05= $18.095 rounds to $18.10
The sale tax on the item is $0.90
Answer:
I think it is D
Step-by-step explanation:
(f + g)(x) = f(x) + g(x) therefore (f + g)(4) = f(4) + g(4)
