Answer:
Step-by-step explanation:
Given that a large trucking company wants to estimate the proportion of its tracker truck population with refrigerated carrier capacity.
Sample size n =200
Sample proportion p = 0.30
q = 1-p =0.70
Std error =
For 90% confidence interval, Z critical = ±1.645
Hence margin of error = ±1.645(0.0324) =±0.0533
Confidence interval = 0.30±0.0533
= (0.2467, 0.3533)
Answer: -5
Step-by-step explanation:
It is a trick question i believe it is already in its siplest ratio
Answer:
Answer A
Step-by-step explanation:
Alt Interior angles make two angles parallel
Answer:
The bear is 35 years of old now.
Step-by-step explanation:
Leon wanted to know the age of the black bear at the zoo.
He is informed that if he adds 10 years to the age of the bear and then doubles it, the bear would be 90 years old.
Let the present age of the bear is x years.
So, according to the above condition we can write
2(x + 10) = 90
⇒ 2x + 20 = 90
⇒ 2x = 70
⇒ x = 35
So, the bear is 35 years of old now. (Answer)