Suppose 49% of the population has a retirement account. If a random sample of size 896 is selected, what is the probability that the proportion of persons with a retirement account will differ from the population proportion by less than 3%?

The probability is  

Step-by-step explanation:

From the question we are told that

  The population proportion is  

  The sample size is  n = 896

 Generally the standard deviation  of the sampling distribution is mathematically represented as

=>  

=>  

   Generally the the probability that the proportion of persons with a retirement account will differ from the population proportion by less than 3% is mathematically represented as

=>

=>  

=>  

From the z table  the area under the normal curve to the left corresponding to  1.796 and  - 1.796  is  

So

=>  

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.