Answer:
1. B>-7 2. M is > or = to 8.8 3. Y < 1/2
Step-by-step explanation:
Formula to find mean and standard deviation is,
Means = np and standard deviation =.
Where n= sample size, p = probability.
According to the given problem, the probability that an individual has 20 vision is 0.19 in a class of 70 students. So,
p = 0.19 and n = 70.
Hence, the first step is to plug in these values in the above formula to get mean and standard deviation. Therefore,
Mean = np
= 70* 0.19
= 13.3
= 13.300 (Rounded to nearest thousandth.
Standard deviation =
=
=
=√10.773
=3.282224855
= 3.282 (Rounded to nearest thousandth).
38 yd is the area of that shape
Hey there! I'm happy to help!
If something is symmetrical you can cut a line through it and it will be the same on both sides. If you have a perfect circle you can cut it in half and it will be the same on both sides, so it is symmetrical.
We see that W looks the same on both sides if you cut it in half at the 3. It is the same on both sides, so the answer is W.
Have a wonderful day! :D