Answer: 0.025
Step-by-step explanation:
The probability density function for a random variable that is uniformly distributed on interval [a,b] is given by :-
Given : A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 45.0 and 55.0 minutes.
Let x be the random variable that denotes the lengths of her classes.
Then, the probability density function =
Now, the probability that a given class period runs between 50.25 and 50.5 minutes will be :-
Hence, the required probability =0.025
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Answer: Yes
Step-by-step explanation:
They are proprtoinal because the x goes up by y, while and y goes up by one
Answer:
3/4 in
Step-by-step explanation:
1/4 : 6
? : 18
Divide 18ft by 6ft, to get 3. This is by how much the original ratio will be enlarged (multiplied) to find the corresponding length for 18ft.
1/4 : 6
1/4 (3) : 6 (3)
3/4 in : 18 ft
or 3/4 in to 18 ft