In a party of school,290 tickets had been sold. if the selling price to the student in the school is one dollar and for his guest the selling price is 3 dollars. the selling price for all sold tickets is 490$ ,find then number of sold tickets from each kind

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true