At a certain college, 70% of the students are 21 years of age or younger. 50% of students are female, and 30% of all students are both female and 21 years of age or younger. If one student is selected...

At a certain college, 70% of the students are 21 years of age or younger. 50% of students are female, and 30% of all students are both female and 21 years of age or younger. If one student is selected...

I don't think I've worked this problem correctly. Please help, thanks!! A teacher says that the top 10% of the class received an A on the last test. The scores were normally distributed...

To clarify, say I draw a card labeled "green" out of a deck of 78 other cards, none of which are the same. I draw four more times after that, and on my fifth draw, I receive...

There is a 85% chance that Josh goes to the mall on Saturday. Otherwise he will go to the movies. Either way, there is a 25% chance that he brings a date. a.) What is the probability...

An urn contains 3 white marbles and 2 black marbles. Two marbles are drawn without replacement. What is the probability that the first marble drawn is white OR the second is black?

Working out too please

Readings on a thermometer are normally distributed with a mean of 0C and a standard deviation of 1.00. What is the probability that a randomly selected thermometer reads: • Less...

Readings on a thermometer are normally distributed with a mean of 0C and a standard deviation of 1.00. What is the probability that a randomly selected thermometer reads: • Less...

The Sorry State Lottery requires you to select five different numbers from 0 through 49. (Order is not important.) You are a Big Winner if the five numbers you select agree with those in the drawing,...

Give answer as a decimal number with 3 correct decimal places. Show work!

5 cards are selected from a fair deck. What is the Probability that they contain at least 4 reds? Please & Thanks!!

SEVEN DISTINCT POINTS ARE DRAWN ON A CIRCLE. HOW MANY DIFFERENT TRIANGLES CAN BE DRAWN IN WHICH EACH VERTEX OF THE TRIANGLE IS AT 1 OF THE 7 POINTS?

What is the set up and work on how to solve the problem

A fair coin is flipped 7 times. What is the probability of obtaining at least 1 tail?

A fair die is thrown 10 times. What is the probability of rolling a 1 on exactly 2 of the 10 throws? Please help!!

At a local company, the ages of all new employees hired during the last 10 years are normally distributed. The mean age is 38 years old, with a standard deviation of 10 years. If you...

For a JFET the V ,i characteristic is parabolic. A simplified model of this is given by i=V2 . In a circuit application the voltage to the JFET is random with a density function f V (v)=2(1−v)...

Chris arrives at work at the same time all five work days. Chris has a favorite parking spot. The probability that Chris will get the favorite parking spot is 70% every day that Chris works. What...

Typing errors or “typos” occur at random on pages in books. The occurrence of these typos are independent of each other. We can safely assume that the occurrence of typos actually has a rather...

In Tinytown there is one traffic signal with two states green and red. The signal is located at the only intersecting streets in Tinytown. The traffic light is green for 90 seconds and then red...

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