Using and analyzing regression lines
the regression line modeling the number of push-ups juan does each day is y = 0.631x + 0.0357.
which one doesn't explain the graph correctly?

1. there is a negative correlation between time (in days) and the number of push-ups juan does.

2. juan increases the number of push-ups he does by about 0.631 each day.

3. the response variable is the number of push-ups

4. the explanatory variable is time (days)

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.