Maria Ioana si Andreea au condectionat 56 de inimioare pt mama. Gate inimi a confectionat fiecare daca Ioana a confectionat de doua ori mai multe decat Maria iar Andreea de doua ori mai multe de cat Ioana

Which of the following is the shape of a cross section of the figure shown below

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

What does independent variable and dependent variable mean in math?