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Wittaler [7]
3 years ago
13

The following table shows the number of hours some students of a of a class listen to music each day.

Mathematics
2 answers:
rewona [7]3 years ago
7 0
Option B is the correct answer.    {number of poeple spending between 0 to 1 hours listening to music is 3}
seraphim [82]3 years ago
5 0

Answer:

Histogram B best represents the data.

Step-by-step explanation:

student:     Hours:

a                0.6

b                0.5

c                2.5

d               2.5

e               1.5

f                2.5

g               0.5

h               1.5

 I               1.5

 j               2.5

 k              2.5

 l               2.5

m              1.5

n               1.5

o               1.5

Since clearly from the table we could see that none of the student spend  more than 3 hours in listening music each day.

Hence, the graph in option A and option D are incorrect.

Now we arrange our data in the interval of 1 unit to get:

Interval                   Number of students

0-1                                       3

1-2                                       6

2-3                                      6

Hence, the histogram that represents this data is:

Histogram B

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Answer:

Fourth and fifth ones are right

Step-by-step explanation:

8 0
2 years ago
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The function y = f(x) is graphed below. What is the average rate of change of the
Serjik [45]

The average rate of change of the function in the given interval -3 ≤ x ≤-1 is 10.

<h3>What is the average rate of change?</h3>

The average Rate of Change of the function f(x) can be calculated as;

f(x) = \dfrac{f(b) - f(a)}{b-a}

Interval -3 ≤ x ≤-1

a = -3, b = -1

f(a) = f(-3) = -20

f(b) = f(-1) = 0

Step 2: Find Average

f(x) = \dfrac{f(b) - f(a)}{b-a}\\\\\\f(x) = \dfrac{f(-1) - f(-3)}{-1-(-3)}\\\\\\f(x) = \dfrac{0 - (-20)}{2}\\\\f(x) = 10

Therefore, the average rate of change of the function in the given interval -3 ≤ x ≤-1 is 10.

Learn more about average rate;

brainly.com/question/20784578

#SPJ1                  

3 0
1 year ago
P-value test and Ctitical Value test are identical. P-value and Critical value are two different names for the same steps. They
creativ13 [48]

Answer:

Option B - False

Step-by-step explanation:

Critical value is a point beyond which we normally reject the null hypothesis. Whereas, P-value is defined as the probability to the right of respective statistic which could either be Z, T or chi. Now, the benefit of using p-value is that it calculates a probability estimate which we will be able to test at any level of significance by comparing the probability directly with the significance level.

For example, let's assume that the Z-value for a particular experiment is 1.67, which will be greater than the critical value at 5% which will be 1.64. Thus, if we want to check for a different significance level of 1%, we will need to calculate a new critical value.

Whereas, if we calculate the p-value for say 1.67, it will give a value of about 0.047. This p-value can be used to reject the hypothesis at 5% significance level since 0.047 < 0.05. But with a significance level of 1%, the hypothesis can be accepted since 0.047 > 0.01.

Thus, it's clear critical values are different from P-values and they can't be used interchangeably.

8 0
3 years ago
At a coffee shop, the lunch bill was $18.45, not including the tip. what was the total amount of the lunch, including a tip of $
lina2011 [118]
The answer would be 18.45 + 3 = 21.45
4 0
3 years ago
Someone please help!!!!! WILL MARK BRAINLIEST ​
adoni [48]

Answer:

y = (1/2)x + 1

Step-by-step explanation:

linear line equation is y = mx + b

Where m is the slope and b is the y-intercept when x is 0.

For m, m is change in y(delta y) over change in x(delta x).

We are given two points: (0,1) and (4,3).

m = (y2 - y1)/(x2 - x1) = (3-1)/(4-0) = 2/4 = 1/2

y = (1/2)x + b

Now plug in (0,1) into above equation to find b value.

1 = (1/2)0 + b => b = 1

Final equation is y = (1/2)x + 1

3 0
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