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
Rudiy27
3 years ago
9

A company had 80 employees whose salaries are summarized in the frequency distribution below. Find the standard deviation. A fre

quency distribution has two columns labeled from left to right "Salary (dollars)" and "Employees". The entry pairs in each row are given as follows, where the salary is listed first and the number of employees is listed second: 5001 to 10,000, 19; 10,001 to 15,000, 14; 15,001 to 20,000, 12; 20,001 to 25,000, 16; 25,001 to 30,000, 19.

Mathematics
2 answers:
JulsSmile [24]3 years ago
7 0

Answer:

SD = 7588.09

Step-by-step explanation:

Check the distribution table attached to for the step by step solution:

The formula for the mean, \bar{x} = \frac{\sum fx}{\sum f}

\bar {x} = \frac{1410040}{80} \\\bar {x} = 17625.5

The variance , V(X) = \sqrt{\frac{\sum f(x - \bar{x}^2)}{n-1} }

V(X) = \frac{4548750000}{80 - 1} \\V(X) = 57579113.92

Standard Deviation,

SD = \sqrt{V(X)} \\SD = \sqrt{57579113.92}

SD = 7588.09

OLEGan [10]3 years ago
4 0

Answer: The standard deviation is 7540.52

Step-by-step explanation:

The working is shown in the attached photo.

You might be interested in
Many mechanics advised people not to drive their cars more than 5,000 miles between oil changes kaci has driven her car 3450 mil
Verizon [17]

Answer:

See explanation!

Step-by-step explanation:

We know that the maximum miles allowed before oil change is 5,000miles (<u>thus Kaci can drive less or up to 5,000 miles but not more</u>).

Kaci has already driven 3,450miles since last oil change.

Inequalities are typically employed to show a relating or comparative relationship between expressions and can be identified by the sybolism of less, more or/and equal to (i.e. , > , \leq, \geq ).

Let us denote the miles Kaci can drive before oil changing again by x, then we can write the following inequality:

3450+x\leq 5000

solving for the remaining miles x allowed

3450+x\leq 5000\\x\leq 5000-3450\\x\leq 1550

Thus Kaci can drive up to and including 1550 miles before chaging car oil again.

5 0
3 years ago
Three consecutive integers add to 567. Find the integers. PLEASE HELP
Aleks04 [339]
Consecutive integers mean one after the other and their difference would one more or less.

Let the numbers be x, x +1, x +2.

Therefore x + (x+1) + (x +2) = 567
               3x + 3 = 567
               3x = 567 -3 = 564
               3x = 564  Divide by 3.
                 x  = 564/3
                 x  = 188
Therefore integers  x, x +1, x +2 = 188, 188+1, 188+2.
                                                =  188, 189, 190.
Cheers.
7 0
3 years ago
THIS IS MY LAST ONE PLEASE HELP
tia_tia [17]

Answer:

x=56

Step-by-step explanation:

okay so

x=180- (64+60)

x= 180-124

x= 56

4 0
2 years ago
80% of what number is 190
Degger [83]
80% of 190 = 152
THE ANSWER IS 152
6 0
2 years ago
Read 2 more answers
​ f(1)=72 f(n)=f(n−1)+9 ​ Find an explicit formula for f(n)
myrzilka [38]

a_{n} = 9n + 63

generate the first few terms using the recursive equation

f(1) = 72

f(2) = 72 + 9 = 81

f(3) = 81 + 9 = 90

f(4) = 90 + 9 = 99

the sequence is 72, 81, 90, 99, .....

This is an arithmetic sequence whose n th term formula is

a_{n} = a_{1} + (n - 1 )d

where a_{1} is the first term and d the common difference

d = 99 - 90 = 90 - 81 = 81 - 72 = 9 and a_{1} = 72

a_{n} = 72 + 9(n - 1) = 72 + 9n - 9 = 9n + 63 ← explicit formula


8 0
3 years ago
Other questions:
  • Please need help on this
    7·1 answer
  • Given: ∠ABC is a right angle and ∠DEF is a right angle. Prove: All right angles are congruent by showing that ∠ABC ≅∠DEF. What a
    15·2 answers
  • Triangle ABC has vertices at A(−3, 4), B(4, −2), C(8, 3). The triangle is translated 4 units down and 3 units left. Which rule r
    6·2 answers
  • illian’s school is selling tickets for a play. The tickets cost $10.50 for adults and $3.75 for students. The ticket sales for o
    15·1 answer
  • What is % of 20 is 50?
    9·2 answers
  • Help please loves? I'm horrible at math.
    11·2 answers
  • What is the quotient
    9·2 answers
  • Make this into three sentences
    6·1 answer
  • What is the value of x?
    7·1 answer
  • -5 - 3(6x – 8) = -5x + 19
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!