1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
coldgirl [10]
3 years ago
7

The data shows the total number of employee medical leave days taken for on-the-job accidents in the first six months of the yea

r: 12, 6, 15, 9, 18, 12. Use the data for the Exercise. Find the sum of squares of the deviations from the mean.
Mathematics
1 answer:
Inga [223]3 years ago
3 0

Answer:

90

Step-by-step explanation:

The sum of squares of the deviation from mean=sum(x-xbar)²=?

x

12

6

15

9

18

12

xbar=sumx/n

xbar=(12+6+15+9+18+12)/6=72/6=12

x      x-xbar       (x-xbar)²

12      12-12=0     0

6       6-12=-6     36

15      15-12=3      9

9       9-12=-3       9

18      18-12=6      36

12      12-12=0      0

sum(x-xbar)²=0+36+9+9+36+0=90

So, the sum of squares of the deviations from the mean is 90.

You might be interested in
What is the exact area of a circle with a diameter of 20 cm?
Kisachek [45]
Hi there! The answer is 100πcm^2

The radius of a circle can be found by dividing the diameter by 2. In other words : the radius is half of the diameter.
Therefore, the radius of a circle with a diameter of 20 cm is 10 cm.

The exact area of a circle can be found using the following formula:
a = \pi \times \: {r}^{2} \\ with \\ a = area \\ r = radius

In order to find our answer, we need to plug in the data from the question.
a = \pi \: \times {10}^{2} = 100\pi

Hence, the answer is 100πcm^2.
5 0
3 years ago
A certain car model has a mean gas mileage of 34 miles per gallon (mpg) with a standard deviation A pizza delivery company buys
zubka84 [21]

Answer:

z =\frac{33.3- 34}{\frac{5}{\sqrt{54}}}= -1.028

z =\frac{34.3- 34}{\frac{5}{\sqrt{54}}}= 0.441

An we can use the normal standard table and the following difference and we got this result:

P(-1.028

Step-by-step explanation:

Assuming this statement to complete the problem "with a standard deviation 5 mpg"

We have the following info given:

\mu = 34 represent the mean

\sigma= 5 represent the deviation

We have a sample size of n = 54 and we want to find this probability:

P(33.3 < \bar X< 34.3)

And for this case since the sample size is large enough >30 we can apply the central limit theorem and then we can use this distribution:

\bar X \sim N(\mu , \frac{\sigma}{\sqrt{n}})

And we can use the z score formula given by:

z=\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing we got:

z =\frac{33.3- 34}{\frac{5}{\sqrt{54}}}= -1.028

z =\frac{34.3- 34}{\frac{5}{\sqrt{54}}}= 0.441

An we can use the normal standard table and the following difference and we got this result:

P(-1.028

7 0
3 years ago
What is the area of a rectangle with a length of 9 and a width of 17?
ikadub [295]

Answer:

153 units squared

Step-by-step explanation:

To solve, multiply your length by your width.

A=lw\\A=9(17)\\A=153

5 0
3 years ago
Read 2 more answers
18 Ib. Then her dog loses another 1 lb. Finally, it
Pavel [41]

Answer:

17 lb I guess 8 don't think the question is full

Step-by-step explanation:

the question is half

8 0
2 years ago
Identify the missing term in the following geometric sequence:
aleksley [76]

Answer:

B. -1/8

Step-by-step explanation:

Using the terms given in the sequence:

4, -2, 1, -1/2, 1/4

we can find the pattern by dividing since it is a geometric seqence:

-2/4 = -1/2

1/-2 = -1/2

-1/2 ÷ 1 = -1/2

So, each term is multiplied by -1/2 to get the next term in the sequence:

\frac{1}{4}*-\frac{1}{2}=-\frac{1}{8}

3 0
3 years ago
Other questions:
  • a candy store owner has chocolate candies worth $2.00 per pound ad sour candies worth $0.75per pound. how much of each kind shou
    10·1 answer
  • Okay so we have this question of the week thing and this week our answer is 4 so i need a algebra problem that is a two step equ
    5·2 answers
  • #6 please (theres also another part to this one, #7)
    14·1 answer
  • Please answer it now in two minutes
    7·1 answer
  • The area of the polygon is 48 mi2. What is the length of side a? miles
    15·1 answer
  • Give all the answer right
    8·1 answer
  • Please solve this will mark brainliest and follow -Thanks
    8·1 answer
  • Two hundred fifteen people have been invited to a reception. The men get a gift of candy that cost $ 6.95 each, and the women ge
    14·1 answer
  • 15 pizzas are cut into 1/8 slices. How many slices of pizza are there?
    5·2 answers
  • at a local drive-thru restaurant four out of every ten drinks sold are diet drinks if the restaurant sells 14,380 drinks in one
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!