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Gennadij [26K]
3 years ago
5

+ 11ab - 10b2

Mathematics
1 answer:
Leviafan [203]3 years ago
6 0
Can you help me with my stuff please
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Is this right yes or no
tatyana61 [14]

Answer:

yes you did that correctly

6 0
2 years ago
Read 2 more answers
A survey of 132 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take
ddd [48]

Answer:

For 90% CI = (0.428, 0.572)

For 98% CI = (0.399, 0.601)

The confidence interval (and Margin of error) reduces when 90% confidence level is used compared to when 98% confidence level is used.

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

p+/-z√(p(1-p)/n)

Given that;

Proportion p = 66/132 = 0.50

Number of samples n = 132

Confidence level = 90%

z(at 90% confidence) = 1.645

Substituting the values we have;

0.50 +/- 1.645√(0.50(1-0.50)/132)

0.50 +/- 1.645√(0.001893939393)

0.50 +/- 0.071589436011

0.50 +/- 0.072

(0.428, 0.572)

The 90% confidence level estimate of the true population proportion of students who responded "yes" is (0.428, 0.572)

For 90% CI = (0.428, 0.572)

For 98% CI = (0.399, 0.601)

The confidence interval (and Margin of error) reduces when 90% confidence level is used compared to when 98% confidence level is used.

7 0
3 years ago
What 5x23p9x2 and what is the common number?
loris [4]
Hi There! :)

<span>What 5x23p9x2 and what is the common number?

5</span>×23=115
<span>115</span>×9=1035
<span>1035</span>×2=2070
<span>
Therefore 2070 is the answer
</span>

5 0
3 years ago
Would these be similar?
const2013 [10]

Hey buddy I am here to help!

Yes these r similar!

Hope this helps!

Plz mark me brainliest!

8 0
3 years ago
Read 2 more answers
This relationship is not a function. Choose the sentence or
IRINA_888 [86]

Answer:

The input x = 1 has many outputs.

The graph is a vertical line.

Step-by-step explanation:

Hi there!

A function is defined as a relation that only gives one output for every given input. For every x-value, there is only one y-value.

Because the x-value of 1 gives us an infinite number of y-values, this is therefore not a function.

More generally, no vertical line is a function for this reason.

I hope this helps!

8 0
2 years ago
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