Darlene is making a quilt that has alternating strips of regular quilting fabric and sateen fabric. The sateen fabric costs $6 per yard and the quilting fabric costs $4 per yard. She spends $76 on a total of 16 yards of the two fabrics at a fabric store. Write a system of equations that can be used to find the amount x (in yds) of regular quilting fabric and the amount y (in yards) of sateen fabric she purchased. Then determine how many yards of each fabric she bought.

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the