Determine whether the given value is a statistic or a parameter.

a health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 lb.

The given value is a statistic.      

Step-by-step explanation:

We are given the following information in the question:

"A health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 lb"

Statistic:

Parameter:

Since, 157 lb is average weight of 40 randomly selected members which is a sample, thus, the given value here is a statistic describing a sample.

It's a linear function. We need only two points to sketch the graph.

f(x) = -5x + 4 → y = -5x + 4

for x = 0 → y = -5(0) + 4 = 0 + 4 = 4 → (0, 4)

for x = 1 → y= -5(1) + 4 = -5 + 4 = -1 → (1, -1)

The domain and the range is the set of all real numbers.