Answer:
Wait how much is the ball cost
Step-by-step explanation: Well if mrs. weeks buyed 2 balls for $150 then the balls cost $75. or if she have different kind of balls it can be $25 each and she bought 3 balls each kind.
Suppose the student guesses the answers, we shall consider this a binomial probability problem of success. This implies that getting a question right is p=1/5.
The number of questions is n=20 questions.
The mean of binomial distribution is
mean=n*p= 20*1/5=4
b] The standard deviation of a binomial distribution is given by:
σ=√(n*p*(1-p))
=√(20*0.2*0.8)
=1.79~1.8
Answer:
μ=4 ; σ=1.8
Answer:
<em>f</em>(1) = 2
One value of <em>x</em><em> </em>for <em>f</em>(x) = 4: 3
Step-by-step explanation:
Look at the graph. Where <em>x</em><em> </em>is 1, <em>f</em>(1)<em> </em>is 2. Now, where <em>f</em>(x) is 4, <em>x</em><em> </em>is 3. Tell me in the comments whether you understand this or not.
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You would do the opposite of what he stated. So you would do $22.20 divided by 12. Which would be $1.85. So a carton of eggs costs $1.85. You would then multiply $1.85 by 7 and get $12.95.