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4vir4ik [10]
3 years ago
13

ANSWER PLEASE!!! A company sells hockey sticks. Members of the company's research group would like to estimate the percentage of

their customers who are left-handed. They plan to survey a sample of customers.
Which method should the members use to select the sample?

randomly select 45 customers from a list of all customers

select the next 45 customers who place an order and are left-handed

randomly select 45 customers from a list of customers who have purchased left-handed hockey sticks

select the next 45 customers who place an order
Mathematics
2 answers:
nataly862011 [7]3 years ago
7 0
I think it is A it's definitely not C because that means it would be bias.
aalyn [17]3 years ago
3 0

Answer:

A. Randomly select 45 customers from a list of all customers

Step-by-step explanation:

We are given that,

The company wants to estimate the percentage of the customers who are left-handed.

In order to find the probability of an event,

We find the ratio of number of favorable events from a random sample to the total number of events.

<em>So, we have to find the number of customers who are left-handed from a random sample and find the percentage.</em>

Thus, the best method to select the sample would be,

<h3>A. Randomly select 45 customers from a list of all customers</h3>
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Answer:

345

Step-by-step explanation:

7-\left(-19\right)-18+\left(-19\right)+187-\left(-19\right)-18+\left(-19\right)+187

7+19-18+\left(-19\right)+187-\left(-19\right)-18+\left(-19\right)+187

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195-18+\left(-19\right)+187

177+\left(-19\right)+187

177-19+187

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4 years ago
The ampitude/frequency/period of y=1/4cos1/2x is 4 pie
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Amplitude: 1/4 (= |a|)
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4 years ago
Help ASAP.
denpristay [2]

1.\\A(n)=-2\cdot5^{n-1}\\\\\text{Find the first, fourth, and eighth terms}\\\text{It means}\ A(1),\ A(4)\ \text{and}\ A(8).\\\\\text{Substitute}\ n=1,\ n=4\ \text{and}\ n=8\ \text{in}\ A(n):\\\\A(1)=-2\cdot5^{1-1}=-2\cdot5^0=-2\cdot1=-2\\\\A(4)=-2\cdot5^{4-1}=-2\cdot5^3=-2\cdot125=-250\\\\A(8)=-2\cdot5^{8-1}=-2\cdot5^7=-2\cdot78,125=-156,250\\\\\boxed{Answer:\ a)\ -2,\ -250,\ -156,250}.


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3 years ago
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<u>Answer:</u>

(-1, 5)

<u>Step-by-step explanation:</u>

The center of a circle is the midpoint of the diameter.

So we have to calculate the midpoint of the diameter, using this formula:

midpoint = (  \frac{x_{2 }+x_{1}  }{2}  , \frac{y_{2} + y_{1} }{2} )

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∴ The center of the circle lies at the point (-1, 5).

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