Binomial probability. Hearing loss in infants. In 2018, nearly all newborns in the US are tested for hearing loss before

[answerhappygod]

Binomial probability. Hearing loss in
infants. In 2018, nearly all newborns in the US are
tested for hearing loss before they leave the hospital. Some
newborns initially fail the hearing test, but this loss is
recovered in time. By the age of 3 months of age, 1.1% still fail
the hearing test.
NOTE: Enter answers rounded to 2 decimal places and use a
leading zero when needed. For example: if the answer is .1,
enter the answer as 0.10
QUESTIONS:
18. Using the formulas, compute the mean and standard deviation
of the random variable, X, the number of 3-month old babies who
fail the hearing test (i.e. demonstrate hearing loss) in a sample
of 5,000.
Mean = n*P =
Standard deviation = square
root[ n * P * ( 1
– P ) ] =
19. Skipped
20. Based on a random sample of 5,000 three-month-old infants,
what is the probability that 40 infants demonstrate hearing
loss?
P(x=40) =