<span>A.) 18 feet in 20 minutes
B.) 90 feet in 2.5 hours
C.) 20 yards in 1.5 hours
D.) 3.6 yards in 15 minutes
</span>
A) 18/20=0.9 ft per min
B) 2.5 hours equals 150 minutes . 90/150=0.6 ft per min
C) 20 yds = 60 ft 1.5 hours = 90 minutes 60/90≈0.67 ft per min
D) 3.6 yds = 10.8 ft 10.8/15=0.72
Therefore the fastest would be 0.6 ft per minute therefore, choice
B) 90 feet in 2.5 hours
The median of a set of numbers is the midpoint of the set if you were to organize the numbers from least to greatest or greatest to least. So, all we have to do is rearrange the numbers from least to greatest and find the midpoint:
67 76 76 82 84 87 93
count 3 in from both sides and the remaining number is 82, which is the median.
Answer:
0.0043 is the probability that the sample of 20 bottles have a mean below 19.90 fl oz.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 20 fl oz
Standard Deviation, σ = 0.17 fl oz
We are given that the distribution of amount of soft drink poured is a bell shaped distribution that is a normal distribution.
Sample size, n = 20
Formula:
a) P(Sample of 20 bottles have a mean below 19.90 fl oz)
P(x < 19.90)
Calculation the value from standard normal z table, we have,
0.0043 is the probability that the sample of 20 bottles have a mean below 19.90 fl oz.
(82 + 78 + 82 + 77 + x) / 5 = 80
319 + x = 80 * 5
319 + x = 400
x = 400 - 319
x = 81 <== she can get an 81 on it and still get a B