A consumer group was interested in comparing the operating time of coldness toot

Question

A consumer group was interested in comparing the operating time of coldness toothbrushes manufactured by two different companies. Group members a random sample of from Company A and 15 from Company B. Each was charged overnight and the number of hours of use before needing to be recharged was recorded. Company A toothbrushes operated for an average of 110.7 hours with a standard deviation of 1.74 hours: Company B toothbrushes operated for an average of 120.6 hours with a standard deviation of 1.72 hours. Since the two samples are independent, the test for two means appropriate in this situation. True False

Explanation / Answer

Yes here we have two independent samples since samples are taken from the tw different companies.

And reseacher want to compare two means. So two independent sample t test wil be used.

Answer: true

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