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
2 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]2 years ago
8 0

Answer:

1 and 2 only

Step-by-step explanation:

You might be interested in
Mi mamá Rosa Amelia, asistió al Hospital cercano a su casa, luego de hacer atendida, el medico tratante le dio tres tipos de pas
kirill [66]

Answer:

La próxima pastilla roja será a las 12:00 a.m.

La próxima pastilla amarilla será a las 8:00 p.m.

La próxima pastilla blanca será a las 7:00 p.m.

4 0
3 years ago
What percent of the animals in the image are dogs?
Klio2033 [76]
Math:

7 dogs, 3 cats, 5 birds. In total, there are 15 animals all together.

So ignore the 3 and 5 those are in there to throw you off. To get the percentage, you do 7/15

So you'd get 0.4666667

Answer: 0.467
Rounded Answer: 0.47 (Or 47% B)

5 0
2 years ago
Read 2 more answers
If driving 60 mph for 9 hours how many miles will they travel in a day
Dimas [21]
60x9=540 I believe is the answer
8 0
2 years ago
-5+(63/9)<br> Can someone help me please.
Margarita [4]

Answer:

2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If a weak monoprotic acid, HA, is titrated with strong base, what is NOT true at the half equivalence point?pH = pKapH = 7.0[HA]
leonid [27]

Answer:

pH can be different from 7 ( second statement is false)

Step-by-step explanation:

since

pH=pKa + log [A-]/[HA]

at half of the equivalence point

[HA]= [A-] (third statement is true)

and therefore

pH = pKa (first statement is true)

since pH = pKa , pH can be different from 7 ( second statement is false)

6 0
3 years ago
Other questions:
  • The ratio of shirts to pants is 3 to 2. if there are 6 shirts, how many pants are there?
    10·1 answer
  • Evaluate the expression 4y/x for x=8 and y=0
    6·1 answer
  • Need help!!!<br> What is the real part of z?<br><br> What is the imaginary part of z?
    7·1 answer
  • A segment with endpoints A (3, 2) and B (6, 11) is partitioned by a point C such that AC and BC form a 2:3 ratio. Find the x val
    8·1 answer
  • given: a= the square root of 3 b= 2 times the square root of 3 c= the square root of 25 d= the square root of 16 wich expression
    13·1 answer
  • HELPPPP!!!! PLEASEEE!!!
    7·1 answer
  • What is 175% of 14.2
    10·2 answers
  • A bakery sold 32 bagels in the first hour of business and 39 bagels in the second hour. If the bakery had 241 bagels to start wi
    5·1 answer
  • The hypotenuse of a right triangle measures 17 cm and one of its legs measures 8 cm.
    14·2 answers
  • Simplify the expression please help ASAP
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!