Consider the continuous random variable x, which has a uniform distribution over the interval from 20 to 28. The probability den
1 answer:
Answer:
The probability density function is f(x)=0.125.
Step-by-step explanation:
We have he continuous random variable x, which has a uniform distribution over the interval from 20 to 28. We calculate the probability density function has what value in the interval between 20 and 28.
We use the formula:
We have a=20 and b=28, we get
The probability density function is f(x)=0.125.
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Answer:
Number of trucks (y) that can be shipped if the number of cars (x) is known
Step-by-step explanation:
A cargo ship can carry 21,600 Tons.
Let x denotes number of cars and y denotes number of trucks.
The cars weigh 3.6 tons each and the trucks weigh 7.5 tons each.
Therefore,
Now write y in terms of x.
Number of trucks (y) that can be shipped if the number of cars (x) is known
Answer:
1727 students
Step-by-step explanation:
Here we have the formula for sample size given as
Where:
p = Mean
ME = Margin of error = 3
z = z score
Therefore, we have
p = 150/240 = 0.625
z at 99 % = 2.575
ME = 3%
Therefore
The number of students Professor York have to sample to estimate the proportion of all Oxnard University students who watch more than 10 hours of television each week within ±3 percent with 99 percent confidence = 1727 students.