Please help! Ill mark you brainliest!
The results of a test given to a group of students are normally distributed with a mean of 71. In the test, 85% of students scored at less than 80. To pass the test a student must score at least 65.

a) find the standard deviation of the score

b) find the probability that a student chosen at random passes the test

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

Every time you drive you will experience a combination of driving conditions and environments.

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%