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jeka57 [31]
2 years ago
15

What is the effect of removing the outlier 11 from the following data set? (1 point)

Mathematics
1 answer:
KiRa [710]2 years ago
6 0

Answer:

A The mean would increase.

Step-by-step explanation:

mean = sum of numbers ÷ how many numbers there are

the mean with the outlier 11:

(11 + 85 + 87 + 88 + 91 + 91 + 92 + 93 + 95) ÷ 9 = 81.4

the mean when removing the outlier 11:

(85 + 87 + 88 + 91 + 91 + 92 + 93 + 95) ÷ 8 = 90.25

the mean has now increased

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A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample size for the experimental g
vovikov84 [41]

Answer:

0.09 average effect

Step-by-step explanation:

Given that the t statistics = 1.54

Sample size (n) = 25

Therefore, variance = t²/n

Variance = 1.54²/25

Variance = 2.372/25

Variance = 0.09

3 0
3 years ago
Determine whether the equation is always sometimes or never true 2(5x+4)=10x+6
Usimov [2.4K]
This equation is NEVER true. Let's solve the equations algebraically by applying the Distributive Property of Multiplication and transposing the terms across the equality sign. The solution is as follows:

<span>2(5x+4)=10x+6
10x + 8 = 10x + 6
10x - 10x = 6 - 8
0 = -2

Therefore, it is not true.</span>
3 0
3 years ago
Evaluate the expression for s = -15. -S= ​
Oxana [17]

Answer:

  -S = 15

Step-by-step explanation:

You are asked to find the opposite of the given value.

<h3>Opposite</h3>

The opposite of an integer value is obtained by changing its sign.

  S = -15

  -S = -(-15) = 15

__

<em>Additional comment</em>

Equivalently, you are multiplying by -1. The product of an even number of minus signs is a plus sign. We usually don't write the plus sign for a numerical value.

3 0
1 year ago
Alex buys 5 DVDs. Each DVD costs $9. If Alex receives a $2 discount on each DVD, what is the total amount of money alex apends?
LekaFEV [45]

Answer:

The total amount of money Alex spends on 5 DVD = $ 35.

Step-by-step explanation:

Total number of DVD purchased by Alex = 5

The cost of each DVD = $9

So, the total cost of purchasing 5 DVD = 5 x ( csot of 1 DVD)

= 5 x ( $ 9) = $ 45

Now , the discount if 1 DVD = $ 2

So, the total discount of 5 DVD = 5 x ( Discount on1 DVD)

= 5 x ($ 2) = $ 10

⇒ The total amount Alex spends

= Total cost of 5 DVD - Discount on 5 DVD

= $ 45 - $ 10 = $ 35

Hence, the total amount of money Alex spends on 5 DVD = $ 35.

7 0
3 years ago
Find the radius r of the sphere.
AleksandrR [38]

Given:

The volume of the sphere = 12348π in³

To find the radius of the sphere.

Formula

The volume of a sphere of radius r is

V = \frac{4}{3} \pi r^{3}

According to the problem,

\frac{4}{3} \pi r^{3} = 12348\pi

Eliminating π from both the side.

or, \frac{4}{3} r^{3}= 12348

or, r^{3}=\frac{(12348)(3)}{4}

or, r^{3}=9641

or, r=\sqrt[3]{9261}

or, r=21

Hence,

The radius of the sphere is 21 inches.

3 0
3 years ago
Read 2 more answers
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