Mathematics, 12.01.2021 01:00 hiiliohi3823

You take a random sample of 150 current cell phone owners, in 2021, and find that 38 of them use their cell phone for banking. Is this evidence that since 2011 there has been an increase from 0.18 in the proportion of cell phone owners who use their cell phone for banking

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You take a random sample of 150 current cell phone owners, in 2021, and find that 38 of them use the...