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# Hypothesis testing

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1. Questions 10-11 use the following information:A recent survey of 853 teenagers in San Francisco reported that 47.01% of them felt thatTwitter is cooler now than it was one year previously. This information is to be used to testthe hypothesis that 50% of all teenagers in San Francisco have this view, against a lower onetailedalternative hypothesis.

How would you go about finding the z value for this and solving it???
2. (Original post by Teddysmith123)
Questions 10-11 use the following information:A recent survey of 853 teenagers in San Francisco reported that 47.01% of them felt thatTwitter is cooler now than it was one year previously. This information is to be used to testthe hypothesis that 50% of all teenagers in San Francisco have this view, against a lower onetailedalternative hypothesis.

How would you go about finding the z value for this and solving it???
Those figures imply that 401 teenagers agreed and that 452 either disagreed/gave no opinion/were equivocal/etc. The easiest way to proceed from here is to do a standard "test of proportions" or a binomial test. What have you been told about for dealing with data like this?

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