Assume that adults have IQ scores that are normally distributed with a mean of 100.7 and a standard deviation 20.3. Find the first quartile Qy, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.)
The first quartile is O
(Type an integer or decimal rounded to one decimal place as needed.)

What is the percent of increase for a population that changed from 438,000 to 561,000

Every rhombus is a square. true false

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?