A car was driven 23 different times with different octane levels. Using the output from the regression, give a 94% confidence interval for the effect of octane on the car. Use 3 decimal places. Simple linear regression results: Dependent Variable: mileage Independent Variable: octane mileage

Max 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.

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work