Since a ratio can also be written to look like a fraction, you can use your knowledge of creating equivalent fractions to this to create equivalent ratios. i.e: 5:10 can be written as 5/10, you can simplify it to 1/2 (1:2) or multiply it by 2/2 to get 10/20 (10:20).
Answer:
0.5466
Step-by-step explanation:
Given that the length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days.
Let X be the length of pregnancies
X is N(266,16)
To find out the probability that pregnancies last between 240 and 270 days (roughly between 8 months and 9 months)
P(240<x<270)
convert each into Z score as 
x=240 means Z = -1.625
x=270 means z=0.25
Required prob
= 
Answer:
12, 1
Step-by-step explanation:
12- 6(1)=
12-6= 6
Answer:
As shown below
Step-by-step explanation:
Given that when X denotes the errors in an experimental transmission channel, when checked by a certifier that detects missing pulses. follows the cumulative density function as given below:


Answer: 2x and x2 are the same
Step-by-step explanation: