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
Alborosie
3 years ago
13

At King Kong High School, the average weight of senior boys is 168 lbs. with a standard deviation of 7 lbs. The average weight f

or senior girls is 117 lbs. with a standard deviation of 5 lbs. Suppose a new distribution is created by adding the boys' weights and the girls' weights together. Assuming that the weights for boys and girls are independent, which of the following is true?
I. The mean of this new distribution is 168 + 117.

II. The standard deviation of this new distribution is 5+ 7.

III. The variance of this new distribution is 52 + 72

A) I only

B) II only

C) I and II only

D) I and III only

E) I, II, and III
Mathematics
1 answer:
finlep [7]3 years ago
8 0

Answer:

1 and 2 only

Step-by-step explanation:

You might be interested in
The Millers plan on retiring soon. When they were first married they purchased 1,000 shares in a mutual fund that was at that ti
Degger [83]

Answer: 6.8%

Step-by-step explanation:

We need to find both percentage so we can determine the increase.

Finding percentage of $10 return: 1% return

Finding percentage of $78 return: 7.8% return

To find the percent increase we do 7.8%-1.0% = 6.8%

7 0
3 years ago
Solve for x.
Zigmanuir [339]
X/2 >= -4
x >= -4 * 2
x >= -8
6 0
3 years ago
Please help me this middle school math i fell asleep help! will give brainliest
castortr0y [4]

Answer:

I think you got it right

Step-by-step explanation:

can you help me Robert Frost's ability to write about the countryside using beautiful imagery was probably influenced by A his life on the farm in the Nem Hampshire countryside. B. his life in the city before he was married C. his keen imagination I need to know this answer

6 0
3 years ago
The area of a parallelogram with the height of 6 meters is a hundred twenty six square meters what is the base length of the par
Anastaziya [24]
That's easy, it is 126 divided by 6 equals 21 meters. cause the formula is base times height = area so you do the opposite of it which is base = area divide by height
6 0
3 years ago
Read 2 more answers
15 = 3h-9<br> Please explain
Afina-wow [57]
The answer is h=15+9/3=8
6 0
3 years ago
Read 2 more answers
Other questions:
  • Show that if X is a geometric random variable with parameter p, then
    5·1 answer
  • A student claims that the expression “9 times the sum of a number and 13” is translated to the algebraic expression 9n + 13. Is
    8·1 answer
  • A blender runs at 120 volts at 4.16 amps. Calculate power
    11·1 answer
  • A plane can carry a maximum cargo weight of 160,000 pounds. A company uses one of these
    8·1 answer
  • Hey who can solve this
    12·1 answer
  • 2. Kimora has 2 peaches, 1 apple, and 3
    6·2 answers
  • Explain how you know...?
    11·1 answer
  • Graph the line with the equation y = -x + 7.
    11·1 answer
  • Layla borrowed some money from her friend in order to help buy a new video game
    13·1 answer
  • Describe whether each equation is true for all one or no values of x
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!