Answer:
option (D) 16.5
Step-by-step explanation:
Data provided:
Sleep time of , X = 15.9 is at the 10th percentile
Standard deviation, σ = 0.5 hour
also,
10th percentile of normal distribution is
Z = F⁻¹(0.10)
or
Z = - 1.28 (Using Standard Normal distribution)
Now,

or
X = μ + ( σ × Z )
or
μ = X - ( σ × Z )
on substituting the respective values, we get
μ = 15.9 - 0.5 × (-1.28)
or
μ = 16.5
Hence, the correct answer is option (D) 16.5
Answer:
165*6+53+792= 990+845 = 1,835
Step-by-step explanation:
38 is the answer because 25+13=38
Answer:
³
Step-by-step explanation:
4x to 3/7 power in radical form
=
³
Looking at the line plot, the longest number of miles is 50, and the shortest is 48 1/4.
Calculating the difference, we have:

Therefore the correct option is the third one.