(PLEASE HELP AS SOON AS POSSIBLE)

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?