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NEED HELP ANSWERING 8 QUESTIONS FOR A MATH HOMEWORK...ATTACHMENT FILE IS INCLUDED..

QUESTION 1: A bag with marbles is shown below. A marble is chosen from the bag at

random. What are the odds in favor of choosing a grey marble?

QUESTION 2: An ordinary (fair) die is a cube with the numbers 1through 6 on the sides

(represented by painted spots). Imagine that such a die is rolled twice in succession and

that the face values of the two rolls are added together. This sum is recorded as the

outcome of a single trial of a random experiment.

Compute the probability of each of the following events:

Event

A : The sum is greater than 5

Event B : The sum is divisible by 4

QUESTION 3: A box is filled with 2 green cards, 4 red cards, and 8 brown cards. A card

is chosen at random from the box. What is the probability that the card is not red?

QUESTION 4: A science class has 7 girls and 5boys in the seventh grade and 2 girls

and 2 boys in the eighth grade. The teacher randomly selects a seventh grader and an

eighth grader from the class for a competition. What is the probability that the students

she selects are both boys?

QUESTION 5: A bag contains

9 marbles: 3 are green, 2 are red, and 4 are blue.

Deshaun chooses a marble at random, and without putting it back, chooses another one

at random. What is the probability that the first marble is red and the second is blue?

QUESTION 6: The 6 students in Mrs. Alexander's class were asked how many minutes

it takes them to get to school in the morning. Here is what they answered:

12 , 14 , 12 , 10 , 14 , 6

Find the mean and median travel times for these students.

QUESTION 7: Here are yesterday's high temperatures (in Fahrenheit) in

50, 51, 59, 63, 63, 65, 67, 73, 76, 76, 80, 84

12 U.S. cities.

Notice that the temperatures are ordered from least to greatest.

Give the five-number summary and the interquartile range for the data set.

1.

2.

3.

4.

5.

MINIMUM =

LOWER QUARTILE =

MEDIAN = UPPER QUARTILE =

MAXIMUM=

INTERQUARTILE RANGE=

QUESTION 8: All 5 members of a family work. Their hourly wages (in dollars) are

32 , 37 , 20 , 13 , 23

Assuming that these wages constitute an entire population, find the standard deviation

of the population. Round your answer to at least two decimal places.

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