General motors wants to administer a satisfaction survey to its current customers. using their customer database, the company randomly selects 30 customers and asks them about their level of satisfaction with the company. what type of sampling is used? cluster convenience simple random systematic stratified

Simple random

Step-by-step explanation:

Since , the company randomly selects customers and asks them about their level of satisfaction with the company.

So the chances for each customer to get selected are equal.

This technique of sampling is known as simple random sampling .

Definition:

Here , the probability for each individual to get selected is equal as , where N = Population size.

In the rest of sampling method (convenience , systematic , stratified and cluster) , the individuals in the population do not have equal chances to get selected. .

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step-by-step explanation:

ik

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

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