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REY [17]
3 years ago
5

Help answer this .....

Mathematics
1 answer:
Kamila [148]3 years ago
3 0

Answer:

It a choose so the answer is D

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Which sample has a greater variability, or spread?
avanturin [10]

Answer:

The orange sample

Step-by-step explanation:

The higher the interquartile range the bigger the variance as it the difference between the 0.25 and 0.75 quantiles which basically means if the difference between the 25 percent and 75 percent is higher then there is more variety as they are further away

Would be amazing if you marked brainliest and feel free to comment any follow up questions :)

8 0
3 years ago
Read 2 more answers
I have many students are represented in the data set?
nalin [4]

Answer:

a) 19 students

b) the mean 3 9/19

the median 3

the mode 3

c) the range 6

Step-by-step explanation:

The data set shows that

0 points gets 1 student,

1 point gets 1 student,

2 points get 2 students,

3 points get 6 students,

4 points get 4 students,

5 points get 3 students and

6 points get 2 students.

a) There are 1+1+2+6+4+3+2=19 students.

b) The mean is

\dfrac{1\cdot 0+1\cdot 1+2\cdot 2+6\cdot 3+4\cdot 4+3\cdot 5+2\cdot 6}{19}=\dfrac{66}{19}=3\dfrac{9}{19}.

The average score is 3 9/19 points.

The median is 10th term in the data set - 3 points (means the middle score in the data set)

The mode is 3 points (means most happened score)

c) The range of the data is 6-0=6 points.

7 0
3 years ago
Find the value of each expression. 42+6÷2
Scrat [10]

Answer:

45

Step-by-step explanation:

6/2 = 3

42+3 = 45

3 0
3 years ago
In general, after a group makes a reservation at a restaurant, they do not show up 20% of the time. If a restaurant has 8 reserv
sashaice [31]

Answer:

P(more than 2 don't show up)=0.2031

Step-by-step explanation:

Multiplication rule for independent events:

If two events A and B are independent then the multiplication rule state that:

P(A and B)= P(A) x P(B)

Find the probability that more than two do not show up:

The probability that the reservations at the restaurant do not show up is 0.20 (=20%) and there were 8 reservations.

P(more than 2 don't show up)= 1- P(less than or equal to 2 don't show up)

= 1-( P(none show up) +P(one don't show up)+P(two don't show up)

=1- ((0.8⁸) +₈ C₁ (0.2¹)x(0.8⁷)  +₈ C₂ (0.2²)x(0.8⁶)

=1- (0.1678 +0.3355+0.2936)= 1-0.7969

P(more than 2 don't show up)=0.2031

5 0
3 years ago
For what value of x is PQ || BC?<br> A 5<br> B. 6<br> C. 7<br> D. 8
Dahasolnce [82]

Answer:

C. 7

Step-by-step explanation:

In\: \triangle ABC\\\overline{PQ} \parallel \overline {BC}.. (given) \\

Therefore, by Basic Proportionality theorem:

\frac{AP}{PB} = \frac{AQ}{QC} \\\\\therefore \frac{x}{x+7} = \frac{x-3}{x+1} \\\\ \therefore \:  \frac{x - x - 7}{x + 7}  =  \frac{x - 3 - x - 1}{x + 1}  \\ (by \: dividendo) \\  \\  \frac{ - 7}{x + 7}  =  \frac{ - 4}{x + 1}  \\  \\  \frac{7}{x + 7}  =  \frac{4}{x + 1}  \\  \\ 7x + 7 = 4x + 28 \\  \\ 7x - 4x = 28 - 7 \\  \\ 3x = 21 \\  \\ x =  \frac{21}{3}  \\  \\ \huge \red{ \boxed{ x = 7}}

5 0
3 years ago
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