Set up a ratio.
x= unknown portion out of 330
19/110= x/330
cross multiply
110x= 19 * 330
110x= 6270
divide both sides by 110
x= 57
ANSWER: She could expect 57 out of 330 to choose volleyball
Hope this helps! :)
Answer:
x = -15 so, 15 ÷ -15 = 0
Step-by-step explanation:
Hope this helps!
True mean = mean+/- Z*(SD/sqrt (n))
Where
Z = 1.96 at 95% confidence interval
Mean = 10.3 pounds
SD = standard deviation = 2.4 pounds
n= sample size = 37 packages
Substituting;
True mean range = 10.3+/- 1.96 * 2.4/Sqrt (37) =10.3+/- 0.77 = 9.53<mean<11.07