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vredina
6 days ago
11

Heights of adult males are known to have a normal distribution. a researcher claims to have randomly selected adult males and me

asured their heights with the resulting relative frequency distribution as shown here. identify two major flaws with these results. height​ (cm) relative frequency 130dash–144 2222​% 145dash–159 2424​% 160dash–174 2121​% 175dash–189 2626​% 190dash–204 2828​%
Mathematics
2 answers:
Leona [4.1K]6 days ago
8 0
The following significant flaws can be identified from the data:
1. The total of the relative frequencies exceeds 100%, which is impossible.
Every dataset's relative frequencies should sum to 100%.

2.) The data distribution lacks symmetry.
Leona [4.1K]6 days ago
3 0

Answer:

The total probability exceeds 100%, indicating a problem with the findings; moreover, the distribution shows excessive uniformity which disqualifies it as a normal distribution.

Detailed explanation:

The sum of probabilities should be exactly 100%. When you add the probabilities of this distribution:

22+24+21+26+28 = 46+21+26+28 = 67+26+28 = 93+28 = 121

This exceeds 100%, highlighting a significant error in the results.

A typical normal distribution possesses a bell curve. If we plot the probabilities for this distribution, we'd see bars at 22, 24, 21, 26, and 28.

The bars would fail to form a bell-shaped curve, confirming that this is not a normal distribution.

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\frac{100}{137.5} = \frac{1}{1.375}  I divided by 100 and shifted the decimal point two places left.
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A church has 8 bells in its bell tower. Before each church service 5 bells are rung in sequence. No bell is rung more than once.
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Utilize the! operation to determine the count of combinations.

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8 days ago
Read 2 more answers
The current global human population is about 6.1 billion and is growing at an annual rate of 1.35 percent. If world population w
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Answer:

Step-by-step explanation:

The world population currently is rising at a yearly rate of 1.35 percent. The nature of the growth is exponential. We will use the exponential growth formula, expressed as

A = P(1 + r)^t

Where:

A indicates the population after t years.

t symbolizes the number of years.

P is the initial population count.

r signifies the growth rate.

<pFrom the given data,

P = 6.1 × 10^9

r = 1.35% = 1.35/100 = 0.0135

t = 1

Hence,

A = 6.1 × 10^9(1 + 0.0135)^1

A = 6.1 × 10^9(1.0135)^1

A = 6182350000

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3 0
12 days ago
What is the nearest ten thousand, the population of Vermont was estimated to be about 620,000 in 2008 . What might have been the
AnnZ [3900]

Answer:

The exact population of Vermont in 2008 could have been around 618,000

Step-by-step explanation:

* Here's how rounding to the nearest ten thousand works:

- Numbers ending with the last four digits between 0001 and 4999 are rounded down to the nearest lower multiple of ten thousand

- Example: 83,525 rounds down to 80,000.

- If the last four digits are 5000 or above, round up to the next higher ten thousand

- Example: 58,988 rounds up to 60,000

* Applying this rule to the problem given:

Since the rounded population is 620,000 to the nearest ten thousand, the actual population could be any value with the last four digits from 0001 to 4999 (like 618,000) or from 5000 upwards (like 624,000).

Therefore, 618,000 might represent the actual population of Vermont in 2008

6 0
15 days ago
Angie baked 100 cookies and 20 brownies. She wants to  split them into equal groups  for the big sale. Each group must have the
zzz [4035]
Avoid repeating the question as it can be perplexing.

Given 100 cookies and 20 brownies,
What is the highest number you can divide them equally by?

To find the greatest common factor,
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Calculating further, 100/20=5
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This means there are 20 groups, each containing 5 cookies and 1 brownie.


20 groups
7 0
2 days ago
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