For standard normal distribution, which of the following variables always equals 1

4. find the geometric mean of 4 and 12. 24 8

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 .

Me n o w. i need t h i s. 10 points