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Vinvika [58]
3 years ago
12

Which ones are polynomials? Plz hurry

Mathematics
1 answer:
Gekata [30.6K]3 years ago
7 0

Answer:

that don't matter just the pre test if u get a good grade on a pre test you don't got ot do the lesson.

Step-by-step explanation:

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A random sample of 16 statistics examinations was taken. The average sample score was 76.2 with a sample variance of 144. The 99
dlinn [17]

99% confidence interval for the population average examination score is between a lower limit of 67.35 and an upper limit of 85.05. The correct option is C.

<h3>What is the margin of error in statistics?</h3>

The margin of error is a statistic that describes how much random sampling error there is in survey results. One should have less faith that a poll's findings would accurately reflect those of a population census the higher the margin of error.

The interval will be calculated as below:-

Confidence interval = mean +/- margin of error (E)

mean = 76.2

variance = 144

sd = sqrt(variance) = sqrt(144) = 12

n = 16

Degree of freedom (df) = n - 1 = 16- 1 = 15

Confidence level (C) = 99% = 0.99

Significance level = 1 - C = 1 - 0.99 = 0.01 = 1%

t-value corresponding to 15 df and 1% significance level is 2.95

The margin of error will be:-

E = t×sd/√n = 2.95 ×  12/√16 = 8.85

The interval will be:-

Lower limit = mean - E = 76.2 - 8.85 = 67.35

Upper limit = mean + E = 76.2 + 8.85 = 85.05

Therefore, the 99% confidence interval for the population average examination score is between a lower limit of 67.35 and an upper limit of 85.05. The correct option is C.

To know more about margin of error follow

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4 0
2 years ago
What division problem has a 1-digit divisor and 2-digit dividend and the largest possible quotient
lisov135 [29]

Answer:

99/1=99

Step-by-step explanation:

7 0
2 years ago
How can you find the slope of a line from the coordinates of two points on the line?
erik [133]
By using the formula
8 0
3 years ago
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Kate begins solving the equation (6x – 3) = (6x – 4). Her work is correct and is shown below. (6x – 3) = (6x – 4) 4x – 2 = 3x –
Alexxandr [17]

Answer:

x = 0.

Step-by-step explanation:

4x = 3x

4x - 3x = 0

x = 0

Hope this helps!

3 0
3 years ago
Two lines intersect to form the angles shown.
yawa3891 [41]
The answer i think it is ,is b 





3 0
3 years ago
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