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DanielleElmas [232]
3 years ago
8

A company uses a computer to identify their 600 most loyal customers from its database and then surveys those customers to find

out how they like their service. Identify the population and determine whether the sample is random or biased.

Mathematics
1 answer:
8_murik_8 [283]3 years ago
6 0
The population would be the total number of customers found in the database.

The sample would be BIASED because the computer will be identifying the 600 most loyal customers from the database.

Since their survey would be about the service of the company, choosing the most loyal customers will ensure that they would have a positive feedback on the service of the company. Customers build loyalty to a business when it has good service and staff. 
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Endpoint 1: (-1,2)<br> Midpoint: (9,-6)<br> Endpoint 2=
Vlad [161]

Answer:

(19 , -14)

Step-by-step explanation:

Find the distance in between each x & y for a coordinate.

Let: (x₁ , y₁) = (-1 , 2)

Let: (x₂ , y₂) = (9 , -6)

From x₁ ⇒ x₂: 9 - (-1) = 10

From y₁ ⇒ y₂: -6 - 2 = -8 = 8*

*Remember that distance cannot be negative, but for the sake of this question, we will leave it as -8.

The distance between the x points are in intervals of 10. The distance between the y points are in intervals of 8. Add 10 & subtract 8 to their respective numbers to get endpoint 2:

(9 (+ 10) , -6 (- 8)) = (19 , -14)

Endpoint 2 = (19 , -14)

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7 0
3 years ago
At Brick House Masonry Supply, it is time for annual pay raises for the fork lift operators.
Dvinal [7]

Answer:

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Step-by-step explanation:

23.04/3.125=7.3728

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6 0
2 years ago
Suppose N has a geometric distribution with parameter p. Derive a closed-form expression for E(N | N &lt;= k), k = 1,2,... Check
vfiekz [6]

Answer:

P(X= k) = (1-p)^k-1.p

Step-by-step explanation:

Given that the number of trials is

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Given p = success,

1 - p = failure

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Pr(X= k) = (1-p)(1-p)(1-p)....(1-p)p

Pr((X=k) = (1 - p)^ (k-1) .p

Since N<=k

Pr (X =k) = p(1-p)^k-1, k= 1,2,...k

0, elsewhere

If the probability is defined for Y, the number of failure before a success

Pr (Y= k) = p(1-p)^y......k= 0,1,2,3

0, elsewhere.

Given p= 0.2, k= 3,

P(X= 3) =( 0.2) × (1 - 0.2)²

P(X=3) = 0.128

3 0
3 years ago
A room in the shape of a cube has a floor area of 20.25 square metre what is its height ? what is its volume ? ​
ki77a [65]

Answer:

Height= 4.5 Volume= 91.125

Step-by-step explanation:

5 0
3 years ago
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If a train travels for 4.5 hours at a rate of 40 mph, what is the distance the train will travel?
Nuetrik [128]
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 hoped this helped =)

4 0
3 years ago
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