Answer:
B. 7
Step-by-step explanation:
Count every number less than 70 (count the leaf plot numbers if that helps).
62,62,63,64,54,56,56 = 7 drivers that travel less than 70 mph
Answer:
$9.9
Step-by-step explanation:
32.75 + 39.88 = 72.63
72.63 x 114% = 72.63 x 1.14 = $82.7982 or $82.80 to the nearest cent.
114% is all of the cost of the meal plus 14 % extra for the tip. See how muliplying by 1.14 includes the $72.63 (this saves the step of adding it on at the end if you were only to find 14% of $72.63)
21/6 will get you your answer which is 3.5 so $3.50
Answer:
a. 0.333
b. 0.657
c. 1.667
d. -4.07
Step-by-step explanation:
a. Expected time of the first purchase is 10/30 = 0.333
b. Probability for time of 0.14 minutes before first purchase is :
e^-rt, r = 30/10 = 3 , t = 0.14
e^ -3 * 0.14 = 0.65704
c. Expected time until 5th order :
1 / [30/10] * 5 = 1.6667
d. Probability that 8th purchase will occur between 1.33 and 2 minutes ;
[30/10 ] / [ 1/2] = 6
Chi squared distribution ;
1.33 * 6 - 2 * 6 = -4.02
