Question: =+a. Do the sample data provide convincing evidence that the mean number of hours that parents think their teens spend online is less than 10

=+a. Do the sample data provide convincing evidence that the mean number of hours that parents think their teens spend online is less than 10 hours per week?

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=+b. Do the sample data provide convincing evidence that the mean number of hours that teens spend online is greater than 10 hours per week?

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