1. Student grades on a chemistry exam were: 77, 78, 76, 81, 86, 51, 79, 82, 84, 99 a. Construct a stem-and-leaf plot of the data. b. Are there any potential outliers? If so, which scores are they? Why do you consider them outliers? 2. Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follows. # of Relative Cumulative Relative movies Frequency Frequency Frequency 0 all brit residue peer lot) airsqitinsq'd = n to rose 101 bebioas1 sis Y bris X, serose fwT .A noleseqxs rose to sulsv 1 9 X thisqigins9 A 2 6 S S- 3 4 3 Y3 4 (Y +X)3 YX3 80 E e e 9. V . S :nolislugoq s mon) (eaulev X) esioge to jee gniwollot art not missm arlf bid .a Snoiludhleib Isohtommye s ai isW a a. Construct a histogram of the data. to noituditleib airy el .woled mepoteirl erli is tool . b. Complete the columns of the chart. 3. For the following scores (X values), find the value of each expression:a. EX maxs vilaimerlo s no asbsip inabuse b. (EX ) 2 usb oil to lolg isal-bos-mota e Jounteno). 6 C. EX - 3 d. E(X-3) ver big emcee fairw call Sajailjun isilasion you smell eA d emailto meritebienoo X Filesryom to redmun sill tissles sow etobute beloelse VImobnici evil-winswT S 4 ewellot es ois alluebi andT pleew auolvong sell berlotsw 2 evisloft ovitslumus 6 eviteleft vonoupeta Lednouca vonsuper asivom 3 4. Two scores, X and Y are recorded for each of n = 5 participants. For these scores, find the value of each expression. Participant X Y e A 3 B 1 5 C -2 2 D -4 2 E 2 4 a. EX b. EY C. E(X + Y) d. EXY 5. Find the mean for the following set of scores (X values) from a population: 2, 7, 9, 4, 5, 3, 0, 6 6. What is a symmetrical distribution? 7. Look at the histogram below. Is this distribution of scores symmetrical? Why or why not? nolessique rises to slav ani bail .(asulsy X) asroos priwollot sill 107 .e5 6 8 8. What does standard deviation measure? 9. Suppose that Rosa and Binh both shop at supermarket A. Rosa waits at the checkout counter for seven minutes and Binh waits for one minute. At supermarket A, the mean waiting time is five minutes and the standard deviation is two minutes. The standard deviation can be used to determine whether a data value is close to or far from the mean. The number line may help you understand standard deviation. If we were to put five and seven on a number line, seven is to the right of five. We say, then, that seven is one standard deviation to the right of five because 5 + (1)(2) = 7. A: Rosa goes back to the store and waits for three minutes. How many standard deviations is she from the mean? B. Binh goes back to the store and waits for 6 minutes. How many standard deviations is she from the mean? 10. What is the formula for standard deviation for a sample? 11. What is the formula for standard deviation for a population