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
ira [324]
3 years ago
5

A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed.

How many students are younger than 16.2 years? Express answer to the nearest student.
Mathematics
1 answer:
Tom [10]3 years ago
7 0
16.2-15.8/0.6=0.6667. Use normalcdf() to find the percentage from -999 to 0.6777 which is 0.7476*625=467
You might be interested in
Gretta is 1 1/2 meters tall. Which of the following is equivalent to 1 1/2 meters? A 150 millimeters B 1.500 millimeters C 100 m
Crazy boy [7]

Answer:

1500 millimeters is your answer

5 0
3 years ago
Easy math! 7th / 20 points
bulgar [2K]

Answer:

d

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
Please help me ASAP! Thank you!
Maurinko [17]
In step 2, you are adding 35.10 and 84.60. You carry the 1 to the 1's place after you add up the tenths and the hundreds place.
6 0
3 years ago
Read 2 more answers
The scale factor of the dimensions of two similar wood floors is 4:3. It costs $207 to refinish the smaller wood floor. At that
Crank

Answer:

$276

Step-by-step explanation:

Create a proportion where x is the cost to refinish the larger wood floor:

\frac{4}{3} = \frac{x}{207}

Cross multiply and solve for x:

3x = 828

x = 276

So, to refinish the larger wood floor, it would cost $276

6 0
3 years ago
To describe a specific arithmetic sequence, Elijah wrote the recursive formula:
Rufina [12.5K]

Answer:

Y(n) = 7n + 23

Step-by-step explanation:

Given:

f(0) = 30

f(n+1) = f(n) + 7

For n=0 : f(1) = f(0) + 7

For n=1 :  f(2) = f(1) + 7

For n=2 : f(3) = f(2) + 7 and so on.

Hence the sequence is an arithmetic progression with common difference 7 and first term 30.

We have to find a general equation representing the terms of the sequence.

General term of an arithmetic progression is:

T(n) = a + (n-1)d

Here a = 30 and d = 7

Y(n) = 30 + 7(n-1) = 7n + 23

7 0
3 years ago
Other questions:
  • Katie uses a copy machine to enlarge her rectangular design that is 6 in. wide and 8 in. long. The new width is 10 in. What is t
    10·1 answer
  • An oil slick is expanding as a circle. The radius of the circle is increasing at the rate of 20 meters per day. Express the area
    7·1 answer
  • Find three consecutive even integers with a sum of 168
    7·2 answers
  • Please answer this correctly
    12·2 answers
  • How to solve 3x+4=9x-8
    10·2 answers
  • João comprou uma TV por R$ 2 400,00; um celular por R$ 1 325,00 e um tênis por R$ 130,00, qual o valor total da compra?
    5·1 answer
  • In which quadrant do the points have negative x-coordinates and negative y-coordinates?
    12·2 answers
  • Pleaseeee answer asappppp
    15·1 answer
  • If sam ran 2hrs on the treadmill and Sarah ran 4/3 miles on the But how many did John do altogether.
    12·1 answer
  • The volume of a cylinder is 63pi cubic inches. Its height is 7 inches. Find the radius of the ball. Round your
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!