All of Paulo and Geneva's children have moved away, started families and begun working on their careers. According to the text, Paulo and Geneva's home is now an "empty nest."

What dietary substance has been found to reduce spina bifida and anencephaly?

a. pectin b. vitamin D c. iodine d. folic acid

The alpha level sets the probability for the

a. Type 1 error b. Type 2 error c. Type 3 error d. none of these