<span>A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
-----
n = [z*s/E]^2
---
n = [2.17*18/4]^2 = 96 when rounded up
</span>
Answer:
31.483
Step-by-step explanation:
913/29=31.483
Answer:
Step-by-step explanation:
Given
f(x) = 2x^2 - 3x
g(x) = -2x + 4
Now
f(-5) = 2 *(-5)^2 - 3*(-5)
= 2 * 25 + 15
= 50 + 15
= 65
Also
g(5) = - 2 * 5 +4
= -10 +4
= - 6
Hope it will help you.
To know how many correspond to each tray if we divide the total cookies equally, we need to make a division of the total cookies divided by the amount of trays, that is:
567 cookies / 7 trays = 567/7
= 81
therefore, there will be 81 cookies in each tray
I assume you mean 6+(z/3)=1?
6+(z/3)=1
z/3=-5
z=-15
Hope this helped
