Answer:
0.731 < p < 0.775
Step-by-step explanation:
We have a sample proportion of 753/1000 = 0.753
We need to construct a 90% confidence interval for the population proportion. Since n > 30, we use the corresponding z-value of 1.645.
See attached photo for the formulas and construction of the confidence interval.
Answer:
2.5
Step-by-step explanation:
E(x) = sum[x + p(x)]
= (0)(0.05) + (1)(0.1) + (2)(0.3) + (3)(0.4) + (4)(0.15)
= 2.5
Answer:
5 units
Step-by-step explanation:
Calculate the distance d using the distance formula
d =
with (x₁, y₁ ) = (6, 4) and (x₂, y₂ ) = (3, 8)
d =
=
=
=
= 5
Answer:
x<-5
Step-by-step explanation:
-4x>20
x>20/-4
x>-5
x<-5