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Tpy6a [65]
2 years ago
11

I NEED HELP ASAP QUESTION BELOW

Mathematics
1 answer:
Gekata [30.6K]2 years ago
3 0

Answer:

Circumference ≈ 50.27

Area ≈ 201.06

Step-by-step explanation:

The circumference of a circle is 2\pi r while the area of the circle \pi r^{2}

Since the diameter is the radius multiplied by 2, the radius of the circle is 8. So substituting 8 for r, the circumference is 2 × \pi × 8, which is approximately 50.27 (rounded to the nearest hundredth) and the area of the circle would be \pi × 8². 8² is 64 so 64 times pi is approximately 201.06 (rounded to the nearest hundredth)

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A local baseball team is struggling this season, and many fans of the team believe it may be time to replace the head coach. To
kolezko [41]

The statement third, “This is voluntary response bias. The result overestimates true support for firing the coach” is correct.

<h3>What is a survey?</h3>

A survey is a means of gathering information from a sample of people using pertinent questions with the goal of understanding populations as a whole.

We have:

A local baseball team is struggling this season, and many fans of the team believe it may be time to replace the head coach.

Number of votes V(n) = 2367

After the value of V(n) 79% of those who responded felt the coach should be fired.

Based on the data given, we can say this is referred to as voluntary response bias. The outcome exaggerates the level of support for firing the coach.

Thus, the statement third “This is voluntary response bias. The result overestimates true support for firing the coach” is correct.

Learn more about the survey here:

brainly.com/question/17373064

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4 0
2 years ago
Plz plz help is for my brother his in first grade
Mkey [24]

4+2 = 6    a a a a + a a = a a a a a a

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Tommy is correct  They are both equal to 6

7 0
3 years ago
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​Recently, a random sample of 13-18 year olds was​ asked, "How much do you currently have in​ savings?" The data in the table re
Sonbull [250]

Answer:

μ = 235.38

σ = 234.54

Step-by-step explanation:

Assuming the table is as follows:

\left[\begin{array}{cc}Savings&Frequency\\\$0-\$199&339\\\$200-\$399&86\\\$400-\$599&55\\\$600-\$799&18\\\$800-\$999&11\\\$1000-\$1199&8\\\$1200-\$1399&3\end{array}\right]

This is an example of grouped data, where a range of values is given rather than a single data point.  First, find the total frequency.

n = 339 + 86 + 55 + 18 + 11 + 8 + 3

n = 520

The mean is the expected value using the midpoints of each range.

μ = (339×100 + 86×300 + 55×500 + 18×700 + 11×900 + 8×1100 + 3×1300) / 520

μ = 122400 / 520

μ = 235.38

The variance is:

σ² = [(339×100² + 86×300² + 55×500² + 18×700² + 11×900² + 8×1100² + 3×1300²) − (520×235.38²)] / (520 − 1)

σ² = 55009.7

The standard deviation is:

σ = 234.54

6 0
3 years ago
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Angelina_Jolie [31]

Answer:

The song is called "The Upside Down"

Step-by-step explanation:

3 0
3 years ago
Find the average speed Distance:1,375km Time: 2 hours 5 minutes
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Answer:

550km/h

Step-by-step explanation:

v (speed) = d/t

v = 1375/2.5

v =550

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