Answer: c. 1498
Step-by-step explanation:
Given : Preliminary estimates suggest that about 58% of students at a state university favor implementing an honor code.
i.e. p = 0.58
Significance level :
Critical value :
Margin of error =
The formula to find the sample size is given by :-
Hence, the minimum sample size needed = 1498
Answer:
r = 8
Step-by-step explanation:
Given that M is directly proportional to r² then the equation relating them is
M = kr² ← k is the constant of proportionality
To find k use the condition when r = 2 , M = 14
k = =
=
M = r² ← equation of proportion
When M = 224, then
224 =r² ← multiply both sides by 2
7r² = 448 ( divide both sides by 7 )
r² = 64 ( take the square root of both sides )
r = = 8
have wonderful day