When Brandon goes bowling, his scores are normally distributed with a mean of 175 and a standard deviation of 13. What percentage of the games that Brandon bowls
does he score less than 187, to the nearest tenth?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .