In a normally distributed set of scores mean is 35 and standard deviation is 7. Approximately what percentage of scores will fall between the scores of 28 and 42? What range of scores will fall between +2 and -2 standard deviation units in this set of scores

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Find the amplitude of a sinusoidal function that models this temperature variation