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
Rama09 [41]
2 years ago
6

Use the data from problem:

Mathematics
1 answer:
navik [9.2K]2 years ago
5 0

Answer:

a) Sample mean: 48.71

Sample median: 48.3

Sample variance: 5.41

Sample standard deviation: 2.37

Step-by-step explanation:

a) Sample mean:

\bar{X}=\frac{1}{N} \sum X_i=\frac{1}{80}*3896.9=48.71

Sample median: M=48.3

Note: I order the data increasingly and take the value N / 2 = 40. In this way there are 39 values above and 39 values below the median.

Sample variance:

s^2=\frac{1}{N-1}\sum (X_i-\bar X)^2 =(\frac{1}{80-1})*427.74=5.41

Sample standard deviation

s=\sqrt{s^2}=\sqrt{5.41}=2.37

b)

You might be interested in
How do you solve 4(8x+5)
alexandr1967 [171]

Answer:

32x+20

Step-by-step explanation:

4*8x+4*5=

32x+20

3 0
2 years ago
Read 2 more answers
there are 176 slices of bread in 8 loaves. if there are the same number of slices in each loaf, how many slices of bread are in
Vaselesa [24]
5 loaves* (176 slices/ 8 loaves)= 110 slices.
(Note that the unit cancels out so you get the answer)

There are 110 slices of bread in 5 loaves~
4 0
3 years ago
I wasn't in school today can someone explain how to do this
Pachacha [2.7K]
You have to multiply 7 3/4 to 9.

First, turn 7 3/4 to an improper fraction which is 31/4.
Next, you multiply 31/4 to 9/1(same thing as 9) across from each other.
Then, you get the answer 279/4(31 x 9 = 279 ;4 x 1 = 4; 279/4).
Last divide 279 to 4 and get 67.75( .75 = 3/4 ; 69 3/4).
 
7 0
3 years ago
Supplementary angles are angles whose son is 180. To supplementary angles are such that one angle is 4° less than three times th
zzz [600]

Answer:

The measures of angle are 46 degrees and 134 degrees.

Step-by-step explanation:

We are given the following in the question:

Let the measure of one the of the supplementary angles be x degrees.

Measure of other angle =

(3x-4)\text{ degrees}

Since, the two angles are supplementary, their sum is 180 degrees.

Thus, we can write and solve the equation:

x + (3x-4) = 180\\4x = 184\\x = 46\\(3x-4) = 134

Thus, the measures of angle are 46 degrees and 134 degrees.

7 0
2 years ago
A quantity with an initial value of 9700 grows continuously at a rate of 0.65% per hour. What is the value of the quantity after
Llana [10]

Answer:

.65% / hr = .0065 / hr

2.75 days * 24 hrs / day = 66 hrs

66 hrs * .0065 / hr = .429

So our amount will become

A = A0 ( 1 + .429) = 9700 * 1.429 = 13860

7 0
2 years ago
Other questions:
  • Are u able to answer all three questions please
    10·1 answer
  • A right triangle has one angle that measures 7°. What is the measure of the other acute angle?
    5·2 answers
  • Use synthetic substitution to find g(2) and g(-7) for the function g(x)=5x^4 - 3x^2 +6x-4
    6·1 answer
  • The perimeter of a triangle is 28 feet. The sides of the triangle measure 10 feet, 9 feet, and x feet. Write and solve an equati
    8·1 answer
  • A gardener is planting two types of trees: Type A is 5 feet tall and grows at a rate of 19 inches per year. Type B is 7 feet tal
    13·1 answer
  • In △JKL, KN=21 m.
    15·2 answers
  • 3. start fraction x over 5 end fraction + 6 = 10 (1 point) 44 30 20 –20 4. 3(4 – 2x) = –2x (1 point) –1 1 2 3
    14·1 answer
  • Put these numbers in order from least to greatest.
    10·1 answer
  • Any polygon can be the base of a prism. A. True B. False​
    5·1 answer
  • The speed of sound in air is 340 m/s. How far , in meters, would a sound of wave travel on 7 seconds?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!