A researcher wants to construct a 90% confidence interval for the proportion of elementary school students in Seward County who receive free or reduced-price school lunches. A state-wide survey indicates that the proportion is 0.50. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.1?

The sample  size is  

Step-by-step explanation:

    The population proportion is  

     The margin of error is  

From the question we are told the confidence level is  90% , hence the level of significance is    

=>  

Generally from the normal distribution table the critical value  of   is  

Generally the sample size is mathematically represented as  

=>  

=>  

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.

the answer is 48m^2!

step-by-step explanation: