Let's say you take a 10 question multiple choice test. Each question has 4 choices and you guess on all of them. What is the pro
bability you get 7 or more right?
2 answers:
In a multiple choice question the probability of success is : p = 1/4 = 0.25
and the probability of failure is : q = 3/4 =) 0.75
r = 7 ( correct answers )
Probability = 10 C r * ( 1/4 ) ^(10- r) * ˙( 3/4 )^r =
= 10 C 7 * ( 0.25 )^3 * ( 0.75 )^7 =
= 120* 0,00208568572 =
= 0,2502822864
<u>Answer: Probability is 0,2502822864 or 25.02822864 %.</u>
Answer:25%
Step-by-step explanation:
You might be interested in
Answer:
the answer are x=4y-20
and x represents the independent variable and y represents the dependent variable
Answer:
16/15 or 1 1/15
Step-by-step explanation:
Subsitute p for 4/5
4/5+4/15
make common denominators
12/15+4/15
=16/15
Store 1 : 12 paper towels for 3.60
3.60 / 12 = 0.30......30 cents per roll
store 2 : 10 paper towels for 3.50
3.50/10 = 0.35....35 cents per roll
the better deal is store 1 with paper towels costing 30 cents per roll
Answer:
y=
+2
<h2><u><em>
PLEASE MARK BRAINLIEST</em></u></h2>