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Lyrx [107]
3 years ago
7

Exhibit 12-4 In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Li

beral Arts College, and 30% of the students were in the Education College. To see whether the proportions have changed, a random sample of 300 students from ABC University was selected. Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College. Refer to Exhibit 12-4. This problem is an example of a _____. Select one: a. test for independence b. multinomial population c. normally distributed variable d. uniformly distributed variable
Mathematics
1 answer:
snow_lady [41]3 years ago
7 0

Answer:

b. multinomial population

Step-by-step explanation:

The data is categorical and non-overlapping. That is, there are multiple options(either the student is in the Liberal Arts College, Business College or Education College), and he cannot be in more than one option.

So this is an example of a multinomial population.

The correct answer is:

b. multinomial population

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Bags of flour at a local grocery store have a mean weight of 83 ounces with a standard deviation of 2 ounces. The manufacturer o
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Answer is 80.4 ounces :)!!!!
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Julie's first three test scores in biology<br> were 65, 90 and 73. What was her<br> average score?
dedylja [7]

Answer:Julie's average score was 76

Step-by-step explanation:

The formula for Average or mean is expressed as

Average = sum of terms / total number of terms.

Julie's first three test scores in biology were 65, 90 and 73.

The sum of the scores would be

65 + 90 + 73 = 228

The number of terms is the number of subjects. Therefore, the number of terms is 3. Therefore,

Average = 228/3 = 76

6 0
4 years ago
D
tamaranim1 [39]

Step-by-step explanation:

you must have left out important pieces of the equation.

what I can see and therefore solve is

-G + 2 = -12

-G = -14

G = 14

7 0
2 years ago
How do you graph a solution set of an inequality that only has whole numbers
fomenos

Answer:

Step-by-step explanation:

A solution set is the set of values which satisfy a given inequality. It means, each and every value in the solution set will satisfy the inequality and no other value will satisfy the inequality.

Example:

Solve 2x + 3 ≤ 7, where x is a natural number.

Solution:

2x + 3 ≤ 7

Subtracting 3 from both the sides,

2x ≤ 4

Dividing both sides by 2,

x ≤ 2

Since  x is a natural number,

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5 0
3 years ago
While Brendan is vacationing with his family at the cabin, they take a motorboat on the river. The motorboat travels
taurus [48]

Part 1: The speed of the boat traveling downstream is (18+w) miles per hr.

The speed of the boat traveling upstream is (18-w) miles per hr.

Part 2: The speed of the current is 4 miles per hour.

Explanation:

Part (1): The motorboat travels 18 miles per hour in still.

Let w represents the speed of the current.

When the boat travels downstream, the speed of the current will get added to the speed of the boat.

Thus, the expression can be written as (18+w) miles per hr

Hence, the speed of the boat traveling downstream is (18+w) miles per hr.

When the boat travels upstream, the speed of the current will get subtracted to the speed of the boat.

Thus, the expression can be written as (18-w) miles per hr.

Hence, the speed of the boat traveling upstream is (18-w) miles per hr.

Part (2): The boat travels 49 miles upstream in the same time it takes to travel 77 miles downstream.

The distance formula is given by distance $=$ speed $\times$ time

Substituting, we have,

49=(18-w)t\\49=18t-wt  ---------------(1)

77=(18+w)t\\77=18t+wt  ---------------(2)

Solving using elimination method,

49=18 t-w t\\77=18 t+w t\\-------\\126=36t

Dividing both sides by 36, we have,

t=3.5

Substituting t=3.5 in $49=18 t-w t$, we get,

49=18(3.5)-w (3.5)\\

49=63-3.5w\\

-14=-3.5w\\

4=w

Thus, the speed of the current is w=4 miles per hour.

5 0
3 years ago
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