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Vesna [10]
3 years ago
14

PLEASE answer correctly i will mark brainliest thanks

Mathematics
2 answers:
Degger [83]3 years ago
8 0

Answer:

Look at the following attachment

Fiesta28 [93]3 years ago
6 0

Answer:

15 25 25 65

10 05 20 35

25 30 45 100

First column is 6th grade, second is 7th, third is 8th and the last column is total

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In a Gallup poll, 26.6% of 5000 people reported a Body Mass Index (BMI) greater than 30, which is classified as obese. The 5000
PSYCHO15rus [73]

Answer:

The 99% confidence interval for the proportion of the population who are obese is (0.25, 0.282)

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 5000, \pi = 0.266

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.266 - 2.575\sqrt{\frac{0.266*0.734}{5000}} = 0.25

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.266 + 2.575\sqrt{\frac{0.266*0.734}{5000}} = 0.282

The 99% confidence interval for the proportion of the population who are obese is (0.25, 0.282)

6 0
3 years ago
Which table of ordered pairs represents a linear function? x y −8 22 0 1 8 22 16 102 x y −8 −7 0 1 8 9 8 2 x y −8 −7 0 0 8 7 16
nekit [7.7K]

The linear function is a function that has a straight line when plotted on a

graph.

<h3>The correct option;</h3>
  • The table of ordered pairs that represent a linear function is the option; <u>x/y  -8/-7  0/0  8/7  16/14</u>

<u />

<h3>Reasons why the above selection is correct:</h3><h3 /><h3>Given;</h3>

The given data can be presented as follows;

x/y -8/22 0/1 8/22 16/102

x/y -8/-7 0/1 8/9 8/2

x/y -8/-7 0/0 8/7 16/14

x/y -8/-7 0/1 8/5 16/4

<h3>Representation of the options in tabular form;</h3>

In a tabular form, we have;

\begin{tabular}{|c|c|}x&y\\-8&22\\0&1\\8&22\\16&102\end{array}\right]  \begin{tabular}{|c|c|}x&y\\-8&-7\\0&1\\8&9\\8&2\end{array}\right]  \begin{tabular}{|c|c|}x&y\\-8&-7\\0&0\\8&7\\16&14\end{array}\right]  \begin{tabular}{|c|c|}x&y\\-8&-7\\0&1\\8&5\\16&4\end{array}\right]

<h3>Characteristic of linear function;</h3>

In a linear function, when the x-values have a constant rate of increase the

first difference in the y-values is constant.

<h3>Selection of the table representing a linear function;</h3>

The option that have constant first difference along with a constant rate of

increase in the x-value is the option with the following table;

\begin{tabular}{|c|c|}x&y\\-8&-7\\0&0\\8&7\\16&14\end{array}\right], which is the option x/y -8/-7 0/0 8/7 16/14

Learn more about linear functions here:

brainly.com/question/1492480

brainly.com/question/8046269

6 0
3 years ago
Raphael buys one raffle ticket.
garri49 [273]

Answer:

There is a 1/250 chance that his ticket will be chosen

There is a 249/250 chance that his ticket will not be chosen

Step-by-step explanation:

Hope that helps!

4 0
2 years ago
What is the same as 98.52 ÷ 10?
MatroZZZ [7]
9.852 hope it helps!!!
8 0
3 years ago
Read 2 more answers
a group of 266 people is called to jury duty in court. Each jury includes 12 jurors plus to alternates. How many complete juries
nekit [7.7K]
There are 14 positions. There are 266 choices for the first juror, 265 for the second, 264 for the third, etc. 266*265*264*...*252=<span>5.93893009829e+33, or about 6,000,000,000,000,000,000,000,000,000,000,000 complete juries. Hope this helps!</span>
7 0
3 years ago
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