In Exercises 21–24, tell whether a correlation is likely in the situation. If so, tell whether there is a causal relationship. Explain your reasoning. 21. the amount of time spent talking on a cell phone and the remaining battery life

22. the height of a toddler and the size of the toddler’s vocabulary

23. the number of hats you own and the size of your head 24. the weight of a dog and the length of its tail

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?