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
pav-90 [236]
3 years ago
15

The Z-score is based on the concept of the normal distribution, the fact that we can expect 95% of the values in the distributio

n to be between 2 standard deviations below the average and 2 standard deviations above the average. Say the average weight of a 4 year old girl is 15 kilograms and the standard deviation is 3 kilograms.
What is true of the following weights:
12 kilograms
a) maybe not healthy
b) definitely not healthy
c) in perfect health
d) We can say nothing based on this
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
7 0

Answer:

C.) In perfect health.

Step-by-step explanation:

Given an average weight of 15kg and a standard deviation of 3kg for children of 4 years. Since the weight is based on a normal Z - distribution of 95% which is mean ± 2(standard deviations)

Mean weight interval is :

15 - 2(3) ; 15 + 2(3)

(9 ; 21) ; this weight interval could be interpreted to mean the normal or perfect weight value.

Therefore, given that the child weighs 12kg

Since, 12 kg falls within in the interval, we can conclude that the child is in perfect health.

You might be interested in
How to write 19,000+400+1+60=
zloy xaker [14]

Answer: 19,461

Step-by-step explanation:

Add 19,000+400 get 19,400

Add 19,400+60 and get 19,460 add 1 and get 19,461

8 0
3 years ago
M times the quotient of 10 and 7​
Ad libitum [116K]
10 / 7 *m or m(10/7)
4 0
3 years ago
If x€{-2,-1,0,1,2,3,4,5} find the solution set 7-x>0 ii 3-4x>-2 vi 3x+4>-2​
maw [93]

Answer:

i) {-2 , -1 , 0 , 1  ,2 , 3 , 4 , 5}

ii) {-2 , -1 , 0 , 1}

iii) {-1 , 0 , 1  ,2 , 3 , 4 , 5}

Step-by-step explanation:

i) 7 - x > 0

⇔ 7 > x

⇔ x < 7

⇔ x ∈ {-2 , -1 , 0 , 1  ,2 , 3 , 4 , 5}

____________________________

ii) 3 - 4x > -2

⇔ 3 + 2 > 4x

⇔ x < 5/4

⇔ x ∈ {-2 , -1 , 0 , 1}

____________________________

iii) 3x + 4 > -2​

⇔ 3x  > -2​ - 4

⇔ 3x  > -6

⇔ x  > -6/3

⇔ x  > -2

⇔ x ∈ {-1 , 0 , 1  ,2 , 3 , 4 , 5}

8 0
1 year ago
A van travels 154 km in 1/3/4 hours (one whole number three over four). Find its speed in km/h
zheka24 [161]

Answer:

88 hrs

Step-by-step explanation:

1/3/4 = 7/4hr ; 7/4 = 1.75hr (the number of hours used to travel for 154km)

154/1.75 = 88 (the number of km van travels per hour)

5 0
3 years ago
URGENT!!
slava [35]
I think the correct answer would be B. The graph in the attached image would most likely be described as a bimodal symmetric. A bimodal graph would be a graph which has two peaks. From the image, we have 3 peaks so it should be a multimodal but it is not in the choices the closest would be a bimodal one. Each group of the peak shows a symmetrical distribution since the left side and the right side are almost mirrors of each other which is seen for all the three peaks. So, the graph should be a bimodal symmetric distribution.
7 0
3 years ago
Other questions:
  • Based on research by barsh and colleagues (2000), _____ genes appear to be related to body weight regulation.
    8·1 answer
  • Find common ratio of the sequence -8 , 24, -72, 216 ​
    5·1 answer
  • Math true or false
    12·1 answer
  • What is an equation of the line that passes through the point (-3, 4) and is parallel
    5·1 answer
  • Jackie and Diane went to dinner at a nice restaurant and ordered seafood and salads. The following is their check:
    11·1 answer
  • Imagine that you are filling treat bags with jellybeans. You have 3 3/8 cups of jellybeans, and each treat bag will contain 1/4
    8·2 answers
  • Can someone please urgently help me with this
    7·2 answers
  • HELP ASAP!!!!! PLEASE
    5·1 answer
  • M các ma trận vuông cấp hai thỏa mãn
    8·1 answer
  • What is the advantage of opening a credit card account at a young age?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!