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3 years ago

Please help, will give BRAINLIST

Mathematics

2 answers:

AlladinOne [14]3 years ago

8 0

C none of the above

ANEK [815]3 years ago

8 0

Answer:

C None of the above

Step-by-step explanation:

We can tell that A is wrong, because there's no peak from 9 to 10. Peak means a large mountain of values, which would be from 1 to 2.

We can tell that B is wrong, because there's no gap from 6 to 9. Gap means that there's no data, and there is definitely data there.

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"How much do students pay, on average, for textbooks during the first semester in college? From a random sample of 400 students

dezoksy [38]

Answer: The margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

Step-by-step explanation:

Since we have given that

Sample size = 400

Mean = $357.75

Standard deviation = $37.89

At 95% confidence level, z = 1.96

We first find the margin of error.

Margin of error is given by

$z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{37.89}{\sqrt{400}}\\\\=3.71$

95% confidence interval would be

$\bar{x}\pm \text{margin of error}\\\\=357.75\pm 3.71\\\\=(357.75-3.71,357.75+3.71)\\\\=(354.04,361.46)$

Hence, the margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

7 0

4 years ago

The baseball field is 9/10 of a mile from Benson’s house. Benson runs 3/10 of a mile and walks 4/10 of a mile on his way to the

inysia [295]

Answer:

2/10 I believe

Step-by-step explanation:

3/10 + 4/10= 7/10

9/10 - 7/10 = 2/10

8 0

3 years ago

The sum of four consecutive numbers is 230. What is the largest of these numbers

vodka [1.7K]

Answer:

n + n+1 + n+2 + n+3 = 230

4n = 224

n = 56 and largest number = 59

Step-by-step explanation:

7 0

3 years ago

NOW I HAVE MORE, PLZ HELP. IK EVERYONE SAYS THIS BUT PLZZZZZZZ

Kruka [31]

Try to focus the camera man

7 0

3 years ago

Help please this is so hard I don't understand it

Zina [86]

Answer:

<ABC = 15

< BAC = 150

Step-by-step explanation:

<C = <B since this is an isosceles triangle. We know this because AC = AB

<C = 15 so <ABC = 15

The sum of the angles of a triangle is 180

A + B+ C = 180

A + 15+15 = 180

A +30 =180

A = 180-30

A = 150

< BAC = 150

5 0

3 years ago