Suppose this professor happens to select Sample 83. (Hint: To see a particular sample, click the Observations button on the left-hand side of the DataView tool. The samples are numbered in the first column, and you can use the scroll bar on the right side to scroll to the sample you want.) Use the DataView tool to find the mean and the standard deviation for Sample 83. The mean for Sample 83 is0.803 . The standard deviation for Sample 83 is0.1130 . Using the distribution of sample means, calculate the z-score corresponding to the mean of Sample 83. The z-score corresponding to the mean of Sample 83 is .

Beatrice decides she wants to babysit a few children at the same time to earn the money faster. she tells parents that if they allow her to babysit their children at her house, she will eliminate her automatic $5 tip and will give them an additional $5 discount. (a) write an equation showing the total cost for each client. identify all variables. (b) four parents bring their children to beatrice’s house at the same time for babysitting. beatrice wants to find out how many hours she must babysit the 4 children to earn exactly the $100 she needs in order to buy the present for her mother. write and solve an equation to find the number of hours. justify each step in the solution. (c) one parent decides not to drop off her child. the remaining 3 parents drop their children off at 9 a.m. two of the parents say they will be back at 1 p.m. the third parent says she will pick up her child at 2 p.m. at noon, beatrice realizes she needs feeding the 3 ch

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if