IDEAS 013' HUMBER lnstrucon Delivery Environment & Assessment System Home > BSTA200 D2A > Assessment QUIZ 9 ' Confidence Intervals Progress saved Submit and End IE! 15' Score: 2/30 2/12 answered You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately 0' = 42.2. You would like to be 94% confident that your esimate is within 3.2 of the true population mean. How large of a sample size is required? Do not round mid-calculation. However, use a critical z value rounded to two (2) decimal places. \"Cl Question Help: I: Video Screenshot