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MAXImum [283]
3 years ago
10

Identify the sample as biased or unbiased and describe its type. John wanted to know about the popularity of a particular movie.

He surveyed 20% of the people in 5 different theaters.
Mathematics
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer: unbiased; simple random sampling

Step-by-step explanation:

From the question, we are informed that John wanted to know about the popularity of a particular movie and that he surveyed 20% of the people in 5 different theaters.

This is an unbiased sample. This is because everybody at the theaters have an equal chance of being chosen by John.

Also, it's a simple random sampling. This is because a subset of the entire population is randomly selected.

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A wheelchair ramp is 8.0 m long. The angle of inclination is 10°. Calculate the rise of
garik1379 [7]

Answer:

The height of the ramp is 1.39 m.

Step-by-step explanation:

We have,

A wheelchair ramp is 8.0 m long

The angle of inclination is 10°

It is required to find the rise of  the ramp.

Here, hypotenuse is 8 m and angle of inclination is 10°.

Using trigonometry to find it.

\sin\theta=\dfrac{x}{8}

x is rise of the ramp

x=\sin(8)\times 10\\\\x=1.39\ m

So, the height of the ramp is 1.39 m.

7 0
3 years ago
What is 2+2. Im in highschool and this is hard.
Murrr4er [49]

Answer:

4

Step-by-step explanation:

2+2=4

3 0
3 years ago
Read 2 more answers
If James measures 5‘4“ tall how tall is James in inches
Kitty [74]

Answer:

64 inches

Step-by-step explanation:

5 * 12 = 60

60 + 4 = 64

8 0
3 years ago
Statement: "Three less than four times a number is greater<br> than or equal to 41."
lions [1.4K]

Answer:

x≥11

Step-by-step explanation:

4x-3≥41

4x≥41+3   -44

x≥44/4 = 11

8 0
2 years ago
SHOW STEPS PLEASE...
zavuch27 [327]

9514 1404 393

Answer:

  (5 15/20) -(2 8/20) = 3 7/20

Step-by-step explanation:

Problems in "least common denominator" are made much easier if you are familiar with your times tables.

When you compare the denominator 4 to the denominator 20, you see that ...

  20 = 5 × 4

An equivalent fraction is made by multiplying by 1. Here, the version of 1 you want for the top fractions is 5/5.

  \dfrac{3}{4}= \dfrac{3}{4}\cdot\dfrac{5}{5}=\dfrac{3\cdot5}{4\cdot5}=\dfrac{15}{20}

Similarly, the bottom fraction has its denominator multiplied by 4 to get from 5 to 20. The equivalent fraction is found by multiplying the numerator by the same number.

  \dfrac{2}{5}=\dfrac{2\cdot4}{5\cdot4}=\dfrac{8}{20}

Then the desired difference is ...

  5\dfrac{15}{20}-2\dfrac{8}{20}=(5-2)+\left(\dfrac{15-8}{20}\right)=3\dfrac{7}{20}

6 0
3 years ago
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