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A research study was conducted to determ...

A research study was conducted to determine whether a certain electrical implant, I, is successful in improving hearing . From a large population of people with hearing loss, 400 participants were selected at random. Half were randomly selected to receive the implant and the other half did not receive the implant . The resulting data showed that people who received the implant had significantly improved hearing compared to those who did not receive the implant.
Based on the study , which of the following is an appropriate conclusion ?

A

Electrical implant I is likely to improve the hearing of people who have hearing loss.

B

Electrical implant I is likely to improve the hearing of all people who have the implant.

C

Electrical implant I is better than other treatments for hearing loss.

D

Electrical implant I will cause a substantial improvement in hearing.

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The correct Answer is:
A
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