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A 2018 Pew Research poll found that 78% of smartphone owners use their phones for online...

A 2018 Pew Research poll found that 78% of smartphone owners use their phones for online shopping. You take a random sample now of 150 current smartphone owners and find that 133 of them use their phone for shopping. Is this evidence that since 2018 there has been an increase in the proportion of smartphone owners who use their devices for shopping? Justify your conclusion at o = 0.01.

a. What test should you conduct here?

b. State the hypotheses and the test statistic

c. Find the p-value.

d. What conclusion do you reach based on your p-value? Summarize in context.

Math   Statistics-And-Probability   
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