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mote1985 [20]
3 years ago
10

A company wants to determine which of its snack options the customers' favorite is. Which two sampling methods produce unbiased

representative samples of the population?
a The company mails out surveys to all of its customers and uses the data from the surveys that are returned.
b The company assigns each customer a number using a random number generator and selects the first 20% of the numbers to survey.
c The company surveys every employee at the company.
d The company surveys every 5th customer on a randomized list of all customers.
e The company runs a commercial offering free snacks to whoever calls in and answers the survey.
Mathematics
1 answer:
horrorfan [7]3 years ago
5 0

Answer:

A i believe.

Step-by-step explanation:

A seems to be the only unbiased answer.

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Answer:

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Now, we have to find the matrix X if \frac{1}{2} X = A

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Now, multiplication of a constant with a matrix means multiplication with that constant with all the terms of the matrix.

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Answer:

D is the largest angle

Step-by-step explanation:

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There are a few ways you can go about solving this question. One way is to use the given information to find how many tons of flour can be processed in one hour. If 27 tons can be processed in 3 hours, we can do 27 divided by 3 to find that 9 tons of flour can be processed per hour. Then, if we want to see how many tons of flour can be processed in 8 hours, we can multiply 9 tons by 8 hours to get a total of 72 tons of flour.

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