Question

Step 1

6.32)

a.

The proportion of 10-year-old boys is tall enough to ride the coaster is ** 0.3707** and it is calculated below:

From the given information, let us define the random variable *X* as the heights of 10-year-old boys follows normal distribution with a mean 54.5 inches and standard deviation 4.5 inches. The roller coaster requires individuals to be at least 56 inches.

Step 2

b.

The proportion of 10-year-old boys is tall enough to ride the coaster is **0.8413** and it is calculated below:...

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