The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population mean of 100 and a population standard deviation of 20. What is the probability we could select a sample of 70 adults and find the mean of this sample is less than 95?

Multiple Choice

• 0.4817
• 0.9634
• 0.9360
• 0.0183

True or False. When deciding to collect sample information rather than collecting information from the population, the amount of time required to collect the information is unimportant.