What multiplies to 45 and adds to 10
1 answer:
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Answer:
a) 0.0013
b) 0.9544
c) 84.13 percentile.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 145
Standard Deviation, σ = 2
We are given that the distribution of wings flap is a bell shaped distribution that is a normal distribution.
Formula:
a) P( flaps its wings more than 151 times a minute)
Calculation the value from standard normal z table, we have,
b) P( flap their wings between 141 and 149 times per minute)
c) Percentile of hummingbird that flaps its wings 147 times a minute
Calculation the value from standard normal z table, we have,
Thus, A hummingbird that flaps its wings 147 times a minute is in the 84.13 percentile.