Ron has 75 blue marbles and 125 red marbles. Enter the percent of blue marbles as a part of all marbles.
1 answer:
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Answer:
The correct answer is "664".
Step-by-step explanation:
The given values are:
Margin of error,
E = 5%
i.e.,
= 0.05
Level of confidence,
C = 99%
i.e.,
= 0.99
Level of significance,
α = 0.01
From the z value table,
Critical z = 2.576
As we know,
The required sample size n will be:
=
On substituting the values, we get
=
=
=
=
i.e.,
=
Answer:
The value of the total ticket sales is, 2500
Step-by-step explanation:
Let x be the total ticket sales.
As per the statement:
if 15% of the total ticket sales is $375
then;
Divide both sides by 15 we have;
multiply both sides by 100 we have;
x = 2500
Therefore, the value of the total ticket sales is, 2500