Heights of 10-year-olds, regardless of gender, closely follow a normal distribution with mean 55 inches and standard deviation 6 inches. USE THE TI CALCULATOR FUNCTIONS TO COMPUTE YOUR ANSWER. What is the probability that a randomly chosen 10-year-old is shorter than 48 inches?

Probability that a randomly chosen 10-year-old is shorter than 48 inches 0.121 .

Step-by-step explanation:

We are given that heights of 10-year-old closely follow a normal distribution with mean 55 inches and standard deviation 6 inches i.e.;

Mean, = 55 inches       and     Standard deviation, = 6 inches

Also,  Z = ~ N(0,1)

Let X = a randomly chosen 10-year-old

Now, Probability(X < 48 inches) = P( < ) = P(Z < -1.17)

                                                  = 1 - P(Z < 1.17) = 1 - 0.87900 = 0.121

The above probability is calculated using z table.

Therefore, the probability that a randomly chosen 10-year-old is shorter than 48 inches is 0.121 .

he spend 5.1 minutes chatting with his friends

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5 1/10

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step-by-step explanation: