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SVETLANKA909090 [29]
3 years ago
10

To be able to say with 95% confidence level that the standard deviation of a data set is within 10% of the population's standard

deviation, the number of observations within the data set must be greater than or equal to what quantity?
Mathematics
1 answer:
boyakko [2]3 years ago
8 0
The answer in this question is 97.
0.20 SD = 1.96 SD / sqrt(n)
n = (1.96 / .200)^2
n = 96.04  
Which is rounded Up to 97
The number of observations within the data set must be greater than or equal to the quantity of 97.
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Two squares have sides 12cm and 4cm respectively. What is the ratio of their sides​
Nookie1986 [14]

Answer:

3 : 1

Step-by-step explanation:

We have to compare the value of two sides.

Ratio of sides = 12 : 4 = \dfrac{12}{4}=\dfrac{4*3}{4*1}=\dfrac{3}{1}

                       =  3 : 1

6 0
2 years ago
Please answer correctly, work is optional.
kati45 [8]

Answer: 0.845

Step-by-step explanation: 1.69 divided by two is 0.845

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sergij07 [2.7K]
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7 0
3 years ago
A line in the xy-plane that passes through the coordinate points (3, -6) and (–7, –4) will never intersecta line that is represe
anyanavicka [17]

Answer:

option A

Step-by-step explanation:

given coordinate (3, -6) and (–7, –4)

to find the equation of line

slope of the line passing through both the point will be

               m = \dfrac{y_2-y_1}{x_2-x_1}

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               m = -\dfrac{2}{10}

equation of line

( y - y₁ ) = m ( x - x₁ )

y + 6= -\dfrac{2}{10}(x - 3)

x + 5 y = -27

line which will not intersect will be parallel to it so option A has same slope as our line equation i.e. -1/5

hence, correct answer is option A

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3 years ago
-88-73 positive or negative
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It will be negative.
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3 years ago
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