QUESTION 11 Suppose people end up tossing 10% of what they buy at the grocery store. Assume this is the true population proportion and that you plan to take a sample survey of 90 grocery shoppers to...

Extracted text: QUESTION 11 Suppose people end up tossing 10% of what they buy at the grocery store. Assume this is the true population proportion and that you plan to take a sample survey of 90 grocery shoppers to further investigate their behavior. 6a. What is the 10th percentile of the distribution of the sample proportion (p)? (Hint: We use the following formula for this: p=p+z(o). Where "z" here is the z-value with an area to the left of the standard normal distribution equal to 0.10. Keep the sign of the z-value you find on the standard normal distribution table. Remember, your final answer must be in units of the random variable p not a z-value.)