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Readme [11.4K]
3 years ago
13

The professor of a business statistics class wanted to find out the average amount of time per week her students spent studying

for the class. She divided the students into the left, right, and center groups according to the location they sat in the class that day. One of these 3 groups was randly selected and everyone in the group was asked the average amount of time per week he/she spent studying for the class. This is an example of a _____ sample
Mathematics
1 answer:
zhenek [66]3 years ago
6 0

Answer:

Cluster sample

Step-by-step explanation:

This is an example of a cluster sample. In a cluster sample, the examiner divides the population into groups (each one of these groups is called a cluster) and once the examiner has these clusters, takes one of them and recollects the data from ALL the members of that cluster. In this case, the teacher divided the class in 3 different groups and then selects one of these groups and asks the average amount of time per week he/she spent studying.

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Aneli [31]
The answer would be 12, 8, 0, -3, -4.

The answer is that because 12 is a positive number so that's higher than negative, 8 goes second because its positive and higher than the others, 0 is third because negatives numbers are LOWER than 0, not higher, -3 is next because higher negative numbers are always lower, not greater than smaller numbers because -8 is LOWER than -4 since its on the left of a number line.
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3 years ago
Find the value of x.<br><br> Please help
bekas [8.4K]

Answer:

86 degrees

Step-by-step explanation:

For triangle the sum of angles is equal to 180 degrees

so,

x+(x-35)+43=180

2x -35+43=180

2x = 180-43+35

2x = 172

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3 years ago
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HELP PLEASE 20 POINTS <br> 1) What is the equation of the line in slope-intercept form?
Nezavi [6.7K]

Answer:

y = (-5/4)x + 5

Step-by-step explanation:

Slope-intercept form is y = mx + b

m is the slope and b is the y-intercept

To find m, we can use the plotted points on the graph

(0,5)(4,0)

Now, do delta y/ delta x

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Now, the y-intercept is the point where the graph crosses the y-axis

This point is where x is 0. Here, when x is 0, y is 5.

Therefore, the y-intercept is 5

Finally, replace what you've found into the equation

y = (-5/4)x + 5

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2 years ago
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A student cost for last semester at her community college was $2900. She spent $464 of that on books. What percent of last semes
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Answer: 14%

Step-by-step explanation:

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3 years ago
se tiene que embaldosar el patio interior de un edificio con baldosas cuadradas de 30 cm de lado. El patio es rectangular y sus
shepuryov [24]

Answer:

40,000 baldosas

Step-by-step explanation:

Lo primero que debemos hacer aquí es calcular el área del patio rectangular.

El mejor enfoque para esto es convertir primero sus medidas a centímetros

Matemáticamente, 100 cm = 1 m, entonces 10 m se convierten en 1000 cm y 12 m se convierten en 1200 m.

El área de un rectángulo es L * B y, por lo tanto, tenemos 1200 * 1000 = 1,200,000 cm ^ 2

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Matemáticamente, eso sería 1,200,000 / 30 = 40,000 fichas

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