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A manufacturer of chocolate chip cookies tests a random sample of 100 cookies and finds that 22 of them contain fewer than 10 chocolate chips.

A manufacturer of chocolate chip cookies tests a random sample of 100 cookies and finds that 22 of them contain fewer than 10 chocolate chips. Find a 95% confidence interval for the population proportion of cookies having fewer than 10 chips. Explain what these results tell you, in terms of cookies and chocolate chips.

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