Consider the Following to Answer the Question(s) Below

question 1

Short Answer

Consider the following to answer the question(s) below:
A consumer group was interested in comparing the operating time of cordless toothbrushes manufactured by two different companies. They took a random sample of 18 toothbrushes 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 119.7 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. Do these samples indicate that Company B toothbrushes operate more hours on average than Company A toothbrushes?
-Write the null and alternative hypotheses. Assume Company A is group 1 and Company B is group 2.

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Definitions:

Data Set

An assembly of interconnected information sets, comprising distinct elements, yet collectively manageable as a single entity by a computer.

Telemarketers

Individuals or companies that market goods or services through telephone calls to potential customers.

Introductory Subscription

A promotional offer for a subscription service that provides access at a reduced rate for a trial period to attract new subscribers.

Median

A statistical measure representing the middle value in a data set, where half of the data points are above and half are below.