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Degger [83]
2 years ago
9

The graph shows the distribution of hand lengths, in centimeters, of the members of an orchestra.

Mathematics
2 answers:
Andrei [34K]2 years ago
8 0

Answer:

c

Step-by-step explanation:

its the right answer on edg2020

lapo4ka [179]2 years ago
5 0

Answer:

The 3rd option is correct.

Variance = 4

Step-by-step explanation:

The graph for the question is missing, but after checking online, it was obtained, although, I'm skeptical of adding the image obtained in order not to violate the community guidelines and lead to deleted answers. So, I'll just describe the graph.

The graph is a bell shaped graph, with the central point at 19 and the rest of the distribution spreading limit from the centre with distributions ranging from 14 to x shown on the x-axis. The spread of the hand length on the x-axis from the center mean of 19, is in multiples of 2 cm.

The bell shaped graph corresponds to that of a normal distribution, the center of the curve being 19 indicates that this is the mean of the distribution and the spread of the distriburion from the mean (2 cm) indicates the standard deviation for the normal distribution.

And the relationship between standard deviation and the variance is given as

Standard deviation = √(variance)

2 = √(variance)

Variance = 2² = 4

Hope this Helps!!!

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Pablo generates the function f (x) = three-halves (five-halves) Superscript x minus 1 to determine the xth number in a sequence.
kondor19780726 [428]

Answer:

f(x + 1) = Five-halves f(x) (A)

Question:

The complete question as found in brainly( ID:13525864) is stated below.

Pablo generates the function f(x) = three-halves (five-halves) Superscript x minus 1 to determine the xth number in a sequence.

Which is an equivalent representation?

f(x + 1) = Five-halvesf(x)

f(x) = Five-halvesf(x + 1)

f(x + 1) = Three-halvesf(x)

f(x) = Three-halvesf(x + 1)

Step-by-step explanation:

f(x) = (3/2)(5/2)^(x-1)

Where 3/2 = three-halves and 5/2 = (five-halves)

To determine an equivalent representation, let's assign values to x to see the outcome and compare it with the options.

f(x) = (3/2)(5/2)^(x-1)

For x = 1

f(x) = (3/2)(5/2)^(1-1) = (3/2)(5/2)^(0)

f(x) =(3/2)(1) = 3/2

For x = 2

f(x) = (3/2)(5/2)^(2-1) = (3/2)(5/2)^(1)

f(x) =(3/2)(5/2)

So from the above assigned values

f(x=1) = 3/2

f(x=2) = f(x + 1) = f(1 + 1)

f(x + 1) = (3/2)(5/2)

Since f(x) = 3/2

f(x+1) = (3/2)(5/2) = f(x) × 5/2 = 5/2f(x)

From the options, an equivalent representation: f(x + 1) = Five-halves f(x)

(A)

5 0
2 years ago
400 students were randomly sampled from a large university, and 289 said they did not get enough sleep. Conduct a hypothesis tes
melomori [17]

Answer:

The sample proportion represents a statistically significant difference from 50%

Step-by-step explanation:

Null hypothesis: The sample proportion is the same as 50%

Alternate hypothesis: The sample proportion is not the same as 50%

z = (p' - p) ÷ sqrt[p(1 - p) ÷ n]

p' is sample proportion = 289/400 = 0.7225

p is population proportion = 50% = 0.5

n is number of students sampled = 400

z = (0.7225 - 0.5) ÷ sqrt[0.5(1 - 0.5) ÷ 400] = 0.2225 ÷ 0.025 = 8.9

The test is a two-tailed test. Using a 0.01 significance level, critical value is 2.576. The region of no rejection of the null hypothesis is -2.576 and 2.576.

Conclusion:

Reject the null hypothesis because the test statistic 8.9 falls outside the region bounded by the critical values -2.576 and 2.576.

There is sufficient evidence to conclude that the sample proportion represents a statistically significant difference from 50%.

3 0
2 years ago
How many ways are there to put 8 beads of different colors on the vertices of a cube, if rotations of the cube (but not reflecti
Delvig [45]
What is being requested, if I'm not mistaken, is the number of permutations for placing each of the 8 beads on the vertices of the cubes;
In this case, we have 8 different beads and 8 possible locations for each of them;
So the number of permutations is:
8! = 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 40320
6 0
2 years ago
Read 2 more answers
On some days,Melvin commutes 3.5 hours per day to the city for business meetings.Last week he commuted for a total of 14 hours.H
DanielleElmas [232]
Formula:

Total hours ÷ hour per day

14 ÷ 3.5 = 4.

The answer is 4.

He commuted 4 days for the city.


3 0
2 years ago
Determine if 0.515115111511115111115... is rational or irrational and give
GREYUIT [131]
It’s rational, for a number to be rational you have to be able to write it as a fraction and you can write 0.515115111511115111115... as a fraction.
7 0
2 years ago
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