Question

A technician is testing light bulbs to determine the number of defective bulbs. The technician records the table below to show the results.
Result of Light Bulb Test
Number of Bulbs Tested
14
28
84
336
Number of Defective Bulbs Found

1

2

6

?

Answer 1

Answer:

The ratio of the number of bulbs tested to defective bulbs is always 14 to 1.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We generally expect industrial processes to produce defects at about the same rate, the proportion of the defective product is generally considered to be a remain constant.

Here, the proportion of defective bulbs is:

1/14 = 2/28 = 6/84

So, it will be 24/336.

The ratio of the number of bulbs tested to defective bulbs is expected to remain constant at about 14.

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