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Answer:
5.46
Step-by-step explanation:
3.24/5.4 = y/9.1
Maria combined all of the factors, which were not all like terms. She should’ve did -4n+9n and 3-4 to get 5n-1
Let x be the discrete random variable whose value is the number of successes in n trials.
The probability distribution function for x of the binomial distribution B(n,p) is defined as

Given that the random sample size is 
let x represent number of customers who purchase running shoes
Let "p" be the probability of customers in a sporting goods store purchase a pair of running shoes.
It is given that 70% of the customers in a sporting goods store purchase a pair of running shoes.
Thus 
Thus the Probability distribution of x is given by
, where 
Answer:
45%
Step-by-step explanation:
To find the percent, we write the information as part/whole:
99/220
Now we convert to a decimal by dividing:
99/220 = 99÷220 = 0.45
Lastly, multiply by 100:
0.45(100) = 45