Calculate a confidence interval for the proportion

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Tinkerbell's Jewelry Shop did a survey on its customers and it was revealed that 10 out of 30 customers had failed to comply with COVID - 19 regulations. Using the above data, answer the questions that follow:

a) Calculate a 90% confidence interval for the proportion of customers who did not comply with COVID - 19 regulations.

b) Using the answer that you have found in part (a) above, illustrate the confidence intervals using a standard normal distribution graph (Bell shaped curve).

Reference no: EM133081692

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