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
azamat
3 years ago
15

University students were surveyed randomly on their opinion regarding a tuition increase. The minimum age recorded was 18 &

the maximum age was 45. Use the range rule of thumb to estimate the standard deviation of the ages.
A: 27.0
B: 6.8
C: 7.9
D: 31.5
Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0

Answer is B.

Standard deviation is a measure of spread in statistics which tells about how the data is clustered around or close to the mean. There is a quick rule known as the Range Rule of Thumb by which we can estimate the standard deviation. According to the range rule of thumb, the range is approximately four times the standard deviation.

s ≈ R4

To use this rule, we may first find the range by subtracting the smallest value from the greatest value: 45 - 18 = 27

now divide the range by 4 to estimate the standard deviation:

s = 27/4 = 6.75 ≈ 6.8


You might be interested in
To those who need points 4-9+5/6*33
son4ous [18]

Answer:

22.5

Step-by-step explanation:

4-9+\dfrac{5}{6}\cdot 33= \\\\\\4-9+27.5= \\\\\\-5+27.5= \\\\\\22.5

Hope this helps!

8 0
4 years ago
Read 2 more answers
Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. What is a reasonable explanation for different rules w
Dahasolnce [82]
it’s A the multiple
5 0
3 years ago
Read 2 more answers
Kimberly said that when you divide two negative decimals the answer will be greater than 0. Use these numbers to answer the ques
ANTONII [103]
(a) it is always true -5.2 x ( -1.4 ) =7.28  AND  -1.4 x (-3.6) =5.04
(b)the rule for multiplying negatives is negative  x  negative = positive.
i hope i answered what you where asking
7 0
3 years ago
If f(x)=x²+3x+5, what is f(3+h)?
Simora [160]
You have to substitute 3+h for x, then work out the equation.

(3+h)^2 + 3(3+h) + 5 = 9 + 6h + h^2 + 9 + 3h + 5 =

h^2 + 9h + 23

Answer B.
8 0
4 years ago
A dealer paid $10,000 for a boat at an auction. At the dealership, a sales person sold the boat for 30% more than the auction pr
DochEvi [55]

Answer: the commission received by the salesperson is $576.9225

Step-by-step explanation:

Let x represent the auction price

At the dealership, a sales person sold the boat for 30% more than the auction price. It means that the amount for which he sold the boat is

x + (30/100 × x)

= x + 0.3x = 1.3x

If the dealer paid $10,000 for a boat at an auction, it means that

1.3x = 10000

x = 10000/1.3

x = 7692.31

The difference between the auction price and the dealer price is

10000 - 7692.31 =$2307.69

The sales person received a commission of 25% of the difference between the auction price and the dealer price. It means that the commission received by the salesperson is

25/100 × 2307.69 = $576.9225

3 0
4 years ago
Other questions:
  • Seven ounces of liver contains 42grams of protein. How many ounces a liver will provide 90gm of protein
    13·1 answer
  • Given: Line b is parallel to line c. Line c is parallel to line e. Line a intersects line b. Which of the following statements a
    12·2 answers
  • What is the vertical asymptote of the function 1 over (cos pi x over 2)?
    5·1 answer
  • The incomplete work of a student to solve an equation is shown below: Step 1: 4x + 12 = 4 Step 2: ? Step 3: x = −8 ÷ 4 Step 4: x
    11·1 answer
  • The bill at the restaurant last night was $25.50 before tax. Sales tax was 6% of the bill. You also left a tip of 10% of the bil
    11·1 answer
  • Please help! show your work if you can.
    10·2 answers
  • Can u pls help me with this question ​
    6·1 answer
  • Pls help! I'm confused. Can you explain this if you can.
    15·1 answer
  • If two sides of a triangle are 7 and 12, what are the possible values for the third side?
    11·2 answers
  • 100 POINTS ANSWER QUICK
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!