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3 years ago

Match the name of the sampling method descriptions given.

Mathematics

1 answer:

lakkis [162]3 years ago

8 0

Answer:

1. c. Convenience Simple

2.d. Random Systematic

3.b. Cluster Stratified

4. a. Sampling Method

Step-by-step explanation:

Each sampling method is different and requires a different approach.

For example, a sample of many people will be a simple sample

However, let's consider this scenario: Pulling 50 names from the hat.

This is a random sample as each name has an equal probaibility of being chosen from the list.

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What is the value of x? Please show step by step.

3241004551 [841]

Start by using trig to find the length of the line LJ

The triangle KJL (big right angled triangle) has been given the following dimensions

Hypotenuse = $8 \sqrt{2}$
The adjacent angle is 30 degrees

Since we have the hypotenuse and the angle we must use the equation
opposite = Sin(angle) x Hypotenuse

Opposite= sin30 x $8 \sqrt{2}$

Opposite= $4 \sqrt{2}$

Therefore line LJ is $4 \sqrt{2}$

Now look at the smaller right angled triangle (LMJ)

Hypotenuse is the line LJ which is $4 \sqrt{2}$

The adjacent angle is 45

Since we have hypotenuse and angle we must use the equation opposite = sin(angle) * h

therefore
x= $4 \sqrt{2}$ * sin45= 4

3 0

3 years ago

The governor of state A earns 50, 440 more than the governor of state B. If the total of their salaries is $283,910, can you fin

WITCHER [35]

Use what we know to make equations in order to solve for each governor's salary.
A=governor of state A
B=governor of state B
A+b=283,910. (Their salaries combined)
A=B+50,440 (A earns 50,440 more than B)
Sub A into the original formula to solve for B
B+50,440+b=283,910
2B=283,910-50,440
2B=233,470
B=116,730
Sub B into the formula that's equal to A
A=B+50,440
A=116,735+50,440
A=167,175
I hope this helps!

4 0

3 years ago

A farm stand sells apples, a, for $5 a bucket and peaches, p,

Mrrafil [7]

Answer:

B. 5a + 8p = 155; p = a - 5

Step-by-step explanation:

4 0

3 years ago

A grocery store bought milk for $2.50 per half gallon and stored it in two refrigerators. During the night, one refrigerator mal

daser333 [38]

In this problem, we let x be the number of half gallons of milk the store bought, and x-12 be the remaining half gallonsWe use the equation profit = revenue-cost
88.08=4.02(x-12)-2.60x88.08=4.02x-48.24-2.6x1.42x=88.08+48.24=136.32x=136.32/1.42=96Hence, the number of half gallons of milk the store bought is 96

4 0

2 years ago

Matias preformed an operation with 7.6 and a number. He ended up moving the decimal point in 7.6 two places to the left. Matias

olga2289 [7]

Answer:

Matias divided 7.6 by 10 raised to the power of -2.

Step-by-step explanation:

Given : Matias preformed an operation with 7.6 and a number. He ended up moving the decimal point in 7.6 two places to the left.

To find : Matias divided 7.6 by 10 raised to the power of ?

Solution :

Matias preformed an operation with 7.6 and a number.

He ended up moving the decimal point in 7.6 two places to the left we have to multiply it with 0.01

i.e. $7.6\times 0.01=\frac{7.6}{100}=0.076$

So, Matias divided 7.6 by 10 raised to the power of -2.

5 0

3 years ago