To evaluate the probability that a randomly selected day will be between 28 and 34 minutes we proceed as follows:
P(28<x<34)
First we evaluate the z-score for the above values:
z=(x-σ)/μ
μ=26.7
σ=5.1
when:
x=28
z=(28-26.7)/5.1
z=0.26
P(z<0.26)=0.6026
when x=34
z=(34-26.7)/5.1
z=1.43
P(z<1.43)=0.9236
hence:
P(28<x<34)=0.9236-0.6026=0.321~32.1%
da ans 2 yo previous n dis ques
Answer:
umm
Step-by-step explanation:
yes....no....
<h3><u>The equation could be used to find the amount of money Min and Jessica each earned is:</u></h3>
<em><u>Solution:</u></em>
Given that,
Min and Jessica collected 60 plastic bottles
They divided the plastic bottles evenly between them and sold the bottles to a recycling center for 10 cents each
Let n represent the amount of money, in cents, that Min and Jessica each earned from the recycling center
Therefore,
Where, 60 divided by 2 denotes that they divided the plastic bottles evenly between them
Which is multiplied by 10( because they sold each bottles for 10 cents)
Thus the equation is:
Answer:
0.01875
Step-by-step explanation:
Given that a company that produces fine crystal knows from experience that 10% of its goblets have cosmetic flaws and must be classified as "seconds."
Let X be the no of seconds.
For any randomly drawn crystal to be as second has a probability 0.10
and this probability is constant for any draw as each crystal is independent of the other
Hence X no of seconds in the sample of 6 goblets is Binomial with n =6 and p = 0.10
Required probability = P(x=1)
=