The table below shows the number of science and non-science majors among a group of 140 international and domestic students.   Science Non-science Total Domestic 55 25 80 International 45 15 60 Total 100 40 140 Using the data from this table, compute the following probabilities. Enter your answers as a decimal number rounded to three decimal places.  If one person in this group is chosen at random, what is the probability that this random student is domestic or a science major:  If the chosen person is a science major, what is the probability that this student is domestic:

In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that a student chosen randomly from the class does not have a cat or a dog? Has a dog Does not have a dog Has a cat 9 6 Does not have a cat 2 11

A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50 % of this population prefers the color black. If 16 buyers are randomly selected, what is the probability that less than 12 buyers would prefer black? Round your answer to four decimal places. Answer How to enter your answer (opens in new window) Tables Keypad Keyboard Shortcuts

Brian is in charge of the mailroom of the Boryk Corporation. Each day the company receives several packages via the U.S. Postal system, for which he must sign. The following is the probability distribution for the number of daily pieces of mail that comes via the Postal system.

The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is aged 50 or over is chosen at random, what is the probability that they have completed a bachelor's or master's degree? Round your answer to the nearest thousandth. High school only Some college Bachelor's degree Master's degree Total Age 20- 29 Age 30- 39 Age 40- 49 420 924 931 Age 50 & over 973 847 1490 1139 1755 624 1389 1521 2460 5994 394 841 773 927 Total 2285 4644 4364 6115 3248 5231 2935 17408

In government data, a family consists of two or more persons who live together and are related by blood or marriage. Choose an American family at random and count the number of people it contains. Here is the assignment of probabilities for your outcome:Number of persons    2       3      4       5       6       7+Probability          0.42    0.23    0.21    0.09    0.03    0.02What is the probability that the family you choose has more than two people?