Acertain flight arrives on time 79 percent of the time. suppose 144 flights are randomly selected. use the normal approximation to the binomial to approximate the probability that

a) exactely 100 flights are on time

b) at least 100 flights are on time

c)fewer than 125 flights are on time

d) between 125 and 126, inclusive are on time

show step by step. especially if you used a calclator or table to find p after calculating the z score.

A) 0

B)0.00248

C)0.9861

D)0.00451

Step-by-step explanation:

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step-by-step explanation:

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get