. Bin the values of x1 into 3 equal size groups. Label the groups with numbers 1 (lowest values) to 3 (highest values). How many observations are assigned to group 1

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer