Question: A professor records the grades for their class. They find that the probability that a student earns an A is p = .14; earns a

A professor records the grades for their class. They find that the probability that a student earns an A is p = .14; earns a B is p = .36; earns a C is p = .32; earns a D is p = .10; and earns an F is p = .08. What is the probability that a student earns a B or better in this class?

a. .36

b. .14

c. .86

d. .50

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Probability Statistics Questions!

P L E A E A N S W E R T H E F O L LO W I N G M AT H Q U E S T I O N S . QUESTION 1 1. Find the simple interest on a $400 investment made for 5 years at an interest rate of 7%/year. What is the...

Table of z values and probabilities for the standard normal distribution. z is the first column plus the top row. Each cell shows P( X z). For example P( X 1.04) = .8508. For z

Describing Data Once we have collected data from surveys or experiments, we need to summarize and present the data in a way that will be meaningful to the reader. We will begin with graphical...

I need help with my attached statistics homework. THIS IS NOT A Quiz. I also screenshot some of the questions multiple times to show the select options. This is all the relevant information....

Car Dealer Number of Number Cars Sold 1 23 2 31 3 13 4 7 5 17 6 23 7 25 8 16 9 40 10 25 11 23 12 18 13 7 14 38 15 18 16 17 17 7 18 39 19 24 20 16 21 39 22 18 23 16 24 15 25 15 26 22 27 18 28 13 29 11...

1. A player throws a fair die and simultaneously flips a fair coin. If the coin lands heads, then she wins twice, and if tails, then one-half of the value that appears on the die. Determine her...

A group of people were asked if they had run a red light in the last year. 410 responded "yes", and 463 responded "no". Find the probability that if a person is chosen at random, they have run a red...

1) Find the probability P (1.90 Z 1.90). 2)The annual commissions per salesperson employed by a retailer of mobile communication devices averaged $45,000, with a standard deviation of $5,900. What...

Hours on-line (x) 0 7 5 2 3 5 1 3 5 10 7 6 Test scores (y) 96 75 84 82 74 76 85 95 68 50 65 58 (a) Is there a positive, negative or no relationship between the number of hours spent online and the...

Differentiate between batch processing and real-time processing. What are the advantages and disadvantages of each form of data processing? Which form is more likely to be used by a doctors office in...

What is an essential different between RR and WFQ packet scheduling? Is there a case where RR and WFQ will behave exactly the same?

Which of the following is correct? Premium = Intrinsic value plus Time value Premium = Intrinsic value minus Time value Premium = Intrinsic value times Time value Premium = Intrinsic value divided by...

The need to account for lease transactions in a useful way proves that the principle of substance over form is essential. Discuss.