David is a statistician. he has a sample size of 40 (which he cannot change). what element of his hypothesis test can he adjust to minimize the probability that he incorrectly rejects the null hypothesis?
a.
the mean of the population
b.
the mean of the sample
c.
the standard deviation of the population
d.
the significance level of the test

the correct answer is:

d) the significance level of the test

explanation:

we cannot change the mean of the population, or the standard deviation of the population. we also cannot change the mean of the sample. the one thing we do have control over is the level of significance of the test.

6 cm

step-by-step explanation:

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b