A poll reported that 70% of adults were satisfied with the job the major airlines were doing. Suppose 11 adults are selected at random and the number who are satisfied is recorded. a) explain why this is a binomial experiment (refer to image)b) find the probability that exactly 4 are satisfied with the airlinesc) find the probability that fewer than 4 are satisfied with the airlinesd) find the probability that 6 or more are satisfied with the airlinese)find the probability that between 5 and 8, inclusive are satisfied with the airlines

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step-by-step explanation:

answer for #1 is c

answer for #2 is d

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: