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PilotLPTM [1.2K]
3 years ago
15

A high school educational researcher interviews 50 randomly selected high school female teachers and 50 randomly selected high s

chool male teachers is called___________.
Mathematics
1 answer:
Oliga [24]3 years ago
8 0

Answer:

Stratified Sampling

Step-by-step explanation:

The given scenario corresponds to stratified sampling because the population is divided in to two strata and from each stratum a random sample of 50 teacher is selected. The stratified sampling involves the selection of random sample of sampling units from the strata constructed by dividing diverse population into similar groups. Here. in the given statement the population is "High School Teachers" which is divide into two strata "Male high school teacher" and "female high school teacher" and then selecting a random sample of size 50 from each stratum.

Hence the given situation corresponds to Stratified Sampling.

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3/8 + 1/4 + 1/2 - 2/3 =
Nostrana [21]

Answer:

\frac{11}{24}

Step-by-step explanation:

3/8 + 1/4 + 1/2 - 2/3

- > 1/4 =  2/8

3/8 + 2/8 + 1/2 - 2/3

5/8 + 1/2 - 2/3

- > 1/2 = 4/8

5/8 + 4/8 - 2/3

9/8 - 2/3

- > LCM of 8,3: 24

- > 9/8 = 27/24

- > 2/3 = 16/24

27/24 - 16/24

11/24

Hope this helps you.

7 0
3 years ago
Assume that in October of a particular year about 215 billion text messages were sent or received in the US, and the prediction
Julli [10]

Answer:

There will be 243 billion messages sent or received in November.

Step-by-step explanation:

Given.

Number of text messages sent or received =215 billion.

Increment on the very next month =13\%=\frac{13}{100}=0.13

Lets find what is 13\%\ of\ 215

 ⇒13\%\ of\ 215

 ⇒0.13\times 215=27.95

So we will add this value to our previous months data.

Now

Number of text messages sent in the month of November =(27.5+215)=242.95 billion.

Rounding to the nearest tenth the answer will be 243 billion.

So 243 billion text messages were sent or received in November.

5 0
3 years ago
1.) A florist sells bouquets for $12.25 each. Amiyah
deff fn [24]

Answer:

Step-by-step explanation:

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6 0
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Answer:

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8 0
2 years ago
Read 2 more answers
The difference between 3.6 and a number is 2.95, as shown below. What number should go in the box to complete the subtraction pr
Sophie [7]
The missing number is 6.   3.6-.65 = 2.95
3.6 - 2.95 = .65

Hope it helps ;)))

8 0
3 years ago
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