1-suppose the time it takes a nine-year old to eat a donut
is between 0.5 and 4 minutes, inclusive. let x = the time,
in minutes, it takes a nine-year old child to eat a donut.
then x^ u (0.5, 4).

a. the probability that a randomly selected nine-year old
child eats a donut in at least two minutes is ?
b. find the probability that a different nine-year old child eats a donut in more than two minutes given that the child has already been eating the donut for more than 1.5 minutes.

0.8571,0.6667

Step-by-step explanation:

Given that the time it takes a nine-year old to eat a donut

is between 0.5 and 4 minutes,inclusive.

Let X = the time,

in minutes, it takes a nine-year old child to eat a donut.

Then X:   U (0.5, 4).

The probability distribution function of X would be

Cumulative function CDF would be

a) The probability that a randomly selected nine-year old

child eats a donut in at least two minutes is

=

b) the probability that a different nine-year old child eats a donut in more than two minutes given that the child has already been eating the donut for more than 1.5 minutes.

=

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true