<h2>y is 28.125 when x = 25</h2>
<em><u>Solution:</u></em>
Given that,
y is inversely proportional to the square root of x
Therefore,
----------- eqn 1
Where, c is constant of propotionality
y = 45 when x = 64
Substitute in eqn 1
What is y when x = 25?
Substitute x = 25 and c = 5.625 in eqn 1
Thus y is 28.125 when x = 25
Answer:
We are 98% confident interval for the mean caffeine content for cups dispensed by the machine between 107.66 and 112.34 mg .
Step-by-step explanation:
Given -
The sample size is large then we can use central limit theorem
n = 50 ,
Standard deviation = 7.1
Mean = 110
1 - confidence interval = 1 - .98 = .02
= 2.33
98% confidence interval for the mean caffeine content for cups dispensed by the machine =
=
=
First we take + sign
= 112.34
now we take - sign
= 107.66
We are 98% confident interval for the mean caffeine content for cups dispensed by the machine between 107.66 and 112.34 .
Step-by-step explanation:
(0.9, -0.5) is the answer