The ages of the winners of a cycling tournament are approximately bell-shaped. the mean age is 28.7 years, with a standard deviation of 3.7 years. the winner in one recent year was 22 years old transform the age to a z-score.

Step-by-step explanation:

We have been given that the ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 28.7 years, with a standard deviation of 3.7 years.

To transform the age of a 22 years old winner to a z-score we will use z-score formula.

, where,

,

,

,

.

Upon substituting our given values in z-score formula we will get,

Therefore, the z-score corresponding to the age of a 22 years old winner is -1.81.

7,24

step-by-step explanation:

(0,,,0)

step-by-step explanation:

the table of x and y values is shown in the attached pic(part of question)

we have to decide according that graph

given points are (0, 0) (–1, 0), (2, 0)

when we graph these points on graph they show an increasing line as shown in the attached pic