Consider these sample data: x, = 15, x2 = 9, x3 = 8, X4 = 19. a. Find n. b. Compute Ex. c. Determine x.

The weights, in pounds, of packages on a delivery truck are shown in the stem-and-leaf plot. Find the mean, the median, and the mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why. ... OA. The mean is 0 36 1 0347 2 2333669 3 045556789 4 01346 5 5 Key: 30=30 Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to one decimal place as needed.) OB. The mean cannot be calculated because the sample size is too small. OC. The mean cannot be calculated because the data are at the nominal level of measurement. D. The mean cannot be calculated because there is an even number of data entries.

Find the percentile of the sample data 20 and 37.

Consider these sample​ data: x1=15​, x2=9​, x3=3​, x4=22.   a. Find n.        b. Compute ∑xi.      c.Determine x.       a.n=

How many samples or treatments are here?   490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01.                                                             Freshman  Sophmore   Junior    Senior Body Piercings                                          61              7              14          86 Only Tattoos                                             43              11             10         64 Only Mildly Piercings and Tattoos            20                9              7…

Research Study:   The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project.Instructions:   Use the data collected to compute the values listed in Table#1.  Use .05 significance.   Research Data Collected: Student Number of pages typed Typing speed Chris 37 70 Mary  6 54 Paul 12 25 Juan 34 42 Marcelo 16 35   Table #1 1.      SP 2.      r2 3.      ∑x 4.      ∑y 5.      SSx 6.      SSy 7.      a 8.      b 9.      F ratio 10.   F critical (value from F table)

I need help on # 3, and 4 please

The lengths (in kilometers) of a random sample of 18 rivers on the South Island of New Zealand that flow to the Pacific Ocean are listed in table below. Lengths of Rivers (in km) 136 121 322 209 208 98 160 66 97 56 90 48 167 64 72 93 288 138 For the data shown above, find the following. Do not round any of your answers. The program here will take either answer.a)  Find the 5-number summary:     { ,,,, } b) Compute the IQR.     Put your answer in the first box and the correct units in the second box.      c) What is the lower fence for this data set?           What is the upper fence for this data set?        d) Which of the following is the correct modified boxplot for the data?     What units would go on each of your answers above?

Consider these sample data: x, = 12, x2 = 7, X3 = 6, x4 = 22. a. Find n. b. Compute x. c. Determine x.