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.
The point (250,0) of the graph represents that the average price per ticket is $250.
Given to us
x is the price the passenger paid
f(x) is the positive percent difference
<h3>What is the correct interpretation of the point (250, 0)?</h3>We know that a coordinate is written in the form of (x, y), therefore, the point (250, 0) represents that the price of the ticket is 250, while the 0 in the coordinate represents that there is no percentage difference. Since the point (250,0) is the mid-value of the x-axis on the graph, we can say that $250 is the average price of the ticket.
Hence, the point (250,0) of the graph represents that the average price per ticket is $250.
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