Please help! I’ll mark your brainliest! 12. A tour bus can seat 55 passengers. A minimum of 15 people must register for the tour to book
the bus.
13. A barn swallow flies 11 meters per second. How fast is this in miles per hour? Note: 1 mile is
approximately 1.6 kilometers.
a. 25 miles per hour
b. 12 miles per hour
c. 5 miles per hour
d. 63 miles per hour
14. Mina bought a plane ticket to New York City and used a coupon for 15% off the ticket price. The
total cost of her ticket, with the discount, was $253.30. What equation could she use to find the
price of the ticket without the discount?
a. 0.15x = 253.30
b. x -0.15(x) = 253.30 C. X = 253.30 +0.15
d. x + 0.15(x) = 253.30

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above