Answer:
std deviation = 1.641
Step-by-step explanation:
Given that the TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally distributed with a mean of 3.1 units/mL.
If X represents the TSH then X is N(3.1, sigma)
We do not know sigma value, but we are given that exactly 95% of healthy individuals have TSH levels below 5.8 units/mL.
We know as per standard normal distribution score that 95th percentile referes to Z score of 1.645
Using this we can find standard dev
21 feet requires = 7 seconds
1 feet requires = 7/21 seconds
180 feet requires
= (7/21)*180
= (1/3)*180
=60 seconds
= 1 minute
the answer should be 125,000
which one is closest from that list? well, pretty sure you already know.
Answer:
this answer is an estimation since i couldn't find an exact answer