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Online ads targeting children were said to have decreased at least 56% be- tween May and August 2000. A sample of 100 ads selected during

Online ads targeting children were said to have decreased at least 56% be- tween May and August 2000. A sample of 100 ads selected during this period showed a 45% decrease in online ads targeting children. State the null and alternative hypotheses and carry out the test at the 1% level of significance.

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