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
sergiy2304 [10]
3 years ago
14

What’s the class width

Mathematics
1 answer:
aksik [14]3 years ago
6 0

Answer:

4

Step-by-step explanation:

Class width is said to be the difference between the upper class limit and the lower class limit consecutive classes of a grouped data. To calculate class width, this formula can be used:

CW = UCL - LCL

Where,

CW= Class width

UCL= Upper class limit

LCL= Lower class limit

From the table above:

For class 1, CW = 64 - 60 = 4

For class 2, CW = 69 - 65 = 4

For class 3, CW = 74 - 70 = 4

For class 4, CW = 79 - 75 = 4

For class 5, CW = 84 - 80 = 4

Therefore, the class width of the grouped data = 4

You might be interested in
What is an<br> equation of the line that passes through the points (-3, -1) and<br> (-6, 3)?
Andrej [43]

Answer:

y = -4/3x + 2

Step-by-step explanation:

to find slope use m= y2-y1/x2-x1

m= 3-(-1)/-6-(-3)

m= 4/-3

m= -4/3

then use point slope formula (y-y1) =m(x-x1)

(y-(-1)) = -4/3(x-(-3))

simplify

y+1 = -4/3x + 3

turn into slope intercept form

y = -4/3x + 2

8 0
3 years ago
Find the surface area of the following figure.
marin [14]

Answer:

144

Step-by-step explanation:

just split the shapes and find the area of each shape then add the answers all together

5 0
3 years ago
How to solve the inequality 1/5 ≤ x/15?
MAXImum [283]

Answer:

3 <_ x

Step-by-step explanation:

multiply both sides by 15

1/5 * 15 <_ x

15/5 <_ x

3 <_ x

8 0
3 years ago
I need to know it ASAP
kotegsom [21]

Answer:

78

Step-by-step explanation:

You would look at the middle number of all the numbers to find the median.

Hope this helps!

6 0
3 years ago
Read 2 more answers
A Cell Phone company sells cellular phones and airtime in a State. At a recent meeting, the marketing manager states that the av
GarryVolchara [31]

Answer:

The null hypothesis is rejected.

There is enough evidence to support the claim that the average age of the customers differs from 40 years.

The sample does not support the manager claim (the average age seems to differ from 40 years).

Step-by-step explanation:

This is a hypothesis test for the population mean.

The manager claims that the average age of customers is 40 years. As this is an equality, we will test if the average age differs from 40. If the null hypothesis failed to be rejected, the claim of the manager is right.

Then, the claim is that the average age of the customers differs from 40 years.

Then, the null and alternative hypothesis are:

H_0: \mu=40\\\\H_a:\mu\neq 40

The significance level is 0.05.

The sample has a size n=50.

The sample mean is M=38.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=7.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{7}{\sqrt{50}}=0.99

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{38-40}{0.99}=\dfrac{-2}{0.99}=-2.02

The degrees of freedom for this sample size are:

df=n-1=50-1=49

This test is a two-tailed test, with 49 degrees of freedom and t=-2.02, so the P-value for this test is calculated as (using a t-table):

P-value=2\cdot P(t

As the P-value (0.049) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the average age of the customers differs from 40 years.

3 0
3 years ago
Other questions:
  • Complete the table to investigate dilations of
    10·1 answer
  • What is the x-intercept of the line with this equation 8x−13y=168x−13y=16 ?
    12·2 answers
  • Write words to match the expression 3+ (4 times 12)
    10·1 answer
  • It says in abc, What is m
    8·1 answer
  • Someone please help ASAP will give brainliest
    12·1 answer
  • If f(x)=3x+2 and g(x)=x-1/3 what is the value of f{g(7)}
    11·1 answer
  • This chart shows the top five salaries for the Los Angeles Dodgers in 2015. Find the mean and mean absolute value of this set of
    9·1 answer
  • Choose the slope-intercept form of 3x + 2y = 5
    12·1 answer
  • Suppose each license plate in a certain state has three digits followed by three letters. The digits and are not used. So, there
    15·1 answer
  • Please answer this! (from khan academy 6th grade math)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!