A USE SALT (a) Construct a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums. (Round your answers to three decimal places.) (b) What assumptions must be made for use of the z confidence interval to be appropriate? (Select all that apply.) O The sample is a random sample. O The sample is voluntary. O The sample is independent. O The sample size is large.

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A: Answer y = 3  solution is given in step 2

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