Sixty percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 20 of them have looked at their score in the past six months

The probability is  

Step-by-step explanation:

From the the question we are told that

    The population proportion is  p =  0.60

    The sample size is  n  =  31

The  mean is evaluated as

substituting values  

The standard deviation is evaluated as

substituting values  

The  the probability that at least 20 of them have looked at their score in the past six months is mathematically represented as

 applying normal approximation we have that

   Standardizing

Form the standardized normal distribution table we have that

      = 0.6293

=>  

=>  

answer is more than one

step-by-step explanation:

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol