35. A researcher is interested in whether teenagers have changed how much they watch TV nowadays. Historically, it was known that teenagers watched 20 hours of TV per week with a standard deviation of 4 hours. Our researcher took a random sample of 50 teenagers and found that on average they watched 15 hours of TV per week with a standard deviation of 6 hours. What should the researcher’s alternative hypothesis be? Group of answer choices µ≠20 µ=20 µ=15 µ≠15

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Q: Brewed decaffeinated coffee contains some caffeine. We want to estimate the amount of caffeine in 8…

A: Formula :

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A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks   Hypothesized…

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