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4 years ago

Number 10-15! PLEASE HELP

Mathematics

1 answer:

Veronika [31]4 years ago

8 0

Im sorry i dont understand the question.. Is there another form of the question you can give me?

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Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to o

Roman55 [17]

Answer:

$Range = 11-2=9$

$\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5$

$\sigma^2 =8.25 \approx 8.3$

$\sigma = \sqrt{8.25}= 2.87 \approx 2.9$

Step-by-step explanation:

Assuming this question: "Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 2,3,4,5,6,7,8,9,10,11 "

Solution to the problem

The range is defined as $Range = Max -Min$ and if we replace we got:

$Range = 11-2=9$

Now we can calculate the population mean with this formula:

$\mu =\frac{\sum_{i=1}^n X_i}{N}$

And if we replace we got:

$\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5$

The population variance is given by:

$\sigma^2 = \frac{\sum_{i=1}^n (X_i -\mu)^2}{N}$

And after replace we got: $\sigma^2 =8.25 \approx 8.3$

And the population standard deviation would be just the square root of the variance and we got:

$\sigma = \sqrt{8.25}= 2.87 \approx 2.9$

4 0

4 years ago

You are testing a machine that scores exam papers and assigns grades. Based on the score achieved the grades are as follows: 1-4

Anni [7]

Answer:

8 test cases

Step-by-step explanation:

Equivalence Partitioning also called as equivalence class partitioning. It is abbreviated as ECP. It is a software testing technique that divides the input test data of the application under test into each partition at least once of equivalent data from which test cases can be derived.

An advantage of this approach is it reduces the time required for performing testing of a software due to less number of test cases.

7 0

4 years ago

I need help pls pls pls pls

nignag [31]

Answer:

9(w+8) factor 9

Step-by-step explanation:

factor expression

9w+72 divide both side by 9

9/9w+72/9

w+8

7 0

3 years ago

Read 2 more answers

Scratchpad

olga nikolaevna [1]

Answer:

50 % probability that the hat is blue.

Step-by-step explanation:

3 blue and 3 black = 6 total tickets

3/6 chance of blue and 3/6 change of it being black

3/6 = 1/2 = 0.5 = 50%

5 0

3 years ago

24 - 1 / 3 p = 3 /8 p

Brums [2.3K]

Answer:

p= $\frac{576}{17}$

Step-by-step explanation:

decimal form p= 33.8823529411764705

mixed number form= 33 $\frac{15}{17}$

6 0

3 years ago