Answer:
23
Step-by-step explanation:
Answer:
We want to find the percentage of values between 147700 and 152300

And one way to solve this is use a formula called z score in order to find the number of deviations from the mean for the limits given:

And replacing we got:


So then we are within 1 deviation from the mean so then we can conclude that the percentage of values between $147,700 and $152,300 is 68%
Step-by-step explanation:
We define the random variable representing the prices of a certain model as X and the distirbution for this random variable is given by:

The empirical rule states that within one deviation from the mean we have 68% of the data, within 2 deviations from the mean we have 95% and within 3 deviations 99.7 % of the data.
We want to find the percentage of values between 147700 and 152300

And one way to solve this is use a formula called z score in order to find the number of deviations from the mean for the limits given:

And replacing we got:


So then we are within 1 deviation from the mean so then we can conclude that the percentage of values between $147,700 and $152,300 is 68%
Answer:
hight is 12
Step-by-step explanation:
Pythagoras theorem 3:4:5which is3×3=9and 3×4=12and 3×5=15
-4(5g+8s=22.87)
5(4g+7s=18.89)
-20g-32s=-91.48
20g+35s=94.45
3s=2.97
s=.99
7(.99)+4g=18.89
6.93+4g=18.99
4g=13.6
g=3.4
Answer:
A: 17
Step-by-step explanation:
X = Number of students
(932.5 - 550)/22.5
(382.5)/22.5
17