Answer:
Two standard deviations
Step-by-step explanation:
The Z score is obtained using the mean and standard deviation, according to the empirical. Rule, which gives percentage of values that lie within an interval estimate in a normal distribution ;
one standard deviation lie within 68% of the mean
Two standard deviations lie within 95%
Three standard deviations lie within 99.7%
Hence, for the question given, 95% fall within 2 standard deviations of the mean
Answer:
45
Step-by-step explanation:
2/9 = 10/m
m = 10*9/2
m = 90/2
m = 45
Simple..
320-304
= 116
Your answer is 116
Happy Studying ^=^
Answer:
x=−2 and y=3/2
Step-by-step explanation:
see picture
Answer:
True
Step-by-step explanation:
√784/√4 = 28/2 = 14