A Tootsie Pop is a hard candy with a chocolate center. A famous commercial once asked:“How many licks to the center of Tootsie Pop?” In an attempt to answer this question, Cory Heid of Siena Heights University asked 90 volunteers to count the number of licks required before reaching the chocolate center. The sample mean number of licks required was 356.1 with a sample standard deviation of 185.7. The population mean number of licks is to be estimated with 95 percent confidence interval. a. The confidence interval is b.We can state with 95 percent confidence that c. How many volunteers should be selected if we wish to construct a 99 percent confidence interval for the population mean number of licks and maintain the margin of error from part? For this calculation, assume that the population standard deviation is 185.7
A Tootsie Pop is a hard candy with a chocolate center. A famous commercial once asked:“How many licks to the center of Tootsie Pop?” In an attempt to answer this question, Cory Heid of Siena Heights University asked 90 volunteers to count the number of licks required before reaching the chocolate center. The sample
a. The confidence interval is
b.We can state with 95 percent confidence that
c. How many volunteers should be selected if we wish to construct a 99 percent confidence interval for the population mean number of licks and maintain the margin of error from part? For this calculation, assume that the population standard deviation is 185.7
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