Answer:
The point estimate for
is 8.5 hours.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a random variable X, with mean
and standard deviation
, a large sample size can be approximated to a normal distribution with mean
and standard deviation
.
In this problem
We are working with a sample of 81 adults, so the point estimae of the mean is the mean number of weekly hours that U.S. adults use computers at home.
So, the point estimate for
is 8.5 hours.
Answer: 48 model cars.
Step-by-step explanation:
1. You know that the ratio of the number of model cars that Jim owns to the number of model cars Terrence owns is 4:3.
2. Let's call the number of model cars that Jim owns is
, therefore, you can solve the exercise as following:

3. Therefore, Jims owns 48 model cars.
Answer:
72,900
Step-by-step explanation:
9 is in the hundreds place so therefore you should look to the left which us 3 and 3 is less than 5 so the answer is 72,900
Answer:
Say what? Elaborate and I can help you
Step-by-step explanation: