If a sample of size 41 is selected, the value of A for the probability P(-A ≤ t ≤ A) = 0.90 is:

1.684

Step-by-step explanation:

since sample size (n) is 41

confidence level = 0.90 = 90%

df = n - 1

df = 41 - 1

df = 40

that is For Degrees of Freedom = 40

significance level α = 1 - (confidence level / 100)

Significance Level α = 1 - (90/100 ) =  0.10

using the z-score

critical values of t = 1.684

A graph has been attached to further assist.

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

6 and 24

step-by-step explanation:

6 x 4 = 24