Six machines at a certain factory operate at the same constant rate. If four of these machines, operating simultaneously, take 2
1 answer:
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Answer:
a) 0.033
b) 0.468
c) 100
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 105.3
Standard Deviation, σ = 8
The amount x of miraculin produced (measured in micro-grams per gram of fresh weight) had a normal distribution.
Formula:
a) P(x > 120)
Calculation the value from standard normal z table, we have,
b) P(x between 100 and 110)
c) P(x < a) = 0.25
Calculation the value from standard normal z table, we have,
Answer:
9 : 7
Step-by-step explanation:
Given
4.5 : 3 ( multiply both parts by 2 to clear the fractions )
= 9 : 7