According to a financial research firm, 29% of adults do not own or use a credit card. Assuming that the sample distribution of "p hat" for sample sizes of 500 is normally distributed, find the following probabilities:
a) That in a sample of 500 more than 30% do not own credit cards.
b) That in a sample of 500 between 25% and 30% do not own credit cards.
*my book only has examples where "x" is given and the probabilites they are looking for are less than. PLEASE HELP!!!! :???:
a) That in a sample of 500 more than 30% do not own credit cards.
b) That in a sample of 500 between 25% and 30% do not own credit cards.
*my book only has examples where "x" is given and the probabilites they are looking for are less than. PLEASE HELP!!!! :???: