I don’t know spanish sorry
Set it equal to 260, because thats what they all equal. so then do 260-15 because thats the only price we know, 260-15= 245. then do 245/7=35. each bracelet was 35 dollars. to check do 35*7=245 & 245+15 = 260
The answer is C. If you simplify the ratios in the table, they equal 3:5. You look at the examples, and divide both numbers in the ratios by this simplified porpotion. If the numbers are the smame as eachother after dividing, that is how you know your answer
Answer:
A. The 99% confidence interval for the difference in the proportion of all dinner customers and all lunch customers who are served within 2 minutes is between -0.195 and 0.289. (0.714 - 0.667) ± 2.576*(√0.714(1- 0.714)/35 + 0.667(1- 0.667)/75).
B. Since the confidence interval contains 0, we cannot conclude that the proportion of customers served within 2 minutes of placing their order is greater during lunch hours than during dinner hours.
Step-by-step explanation:
got this off chegg.
