4 years ago

What’s the correct answer for this?

Mathematics

1 answer:

Blababa [14]4 years ago

3 0

Answer:

(4,7)

Step-by-step explanation:

In the attached file

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The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

blsea [12.9K]

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

$\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}$

$=\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182$

Compute the standard deviation as follows:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

$=\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899$

Thus, the standard deviation of the age distribution is 6.2899 years.

7 0

3 years ago

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Rama09 [41]

Answer:

2,827.43

Step-by-step explanation:

4 0

3 years ago

alex sells cars at keith palmer ford. he earns $400 a week plus $150 percar he sells. if he earned $150 last week , how many car

Igoryamba

Alex would have sold one car

3 0

3 years ago

Read 2 more answers

It costs $55.00 to rent the baseball field, plus $2.25 per person. What would be the total cost to rent the baseball field for 2

aleksklad [387]

Answer:

$118.00

Step-by-step explanation:

$2.25 x 28 = $113

$113.00 + $55.00

8 0

3 years ago

How do you find the distance of each number from the mean

motikmotik

Find the absolute value of the difference between each data value and the mean: data value – mean

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4 years ago