Homework 3.4 Statistics

nuuuutem. (Type integers or decimals. Do not round.) (It) Does the data set have outliers? Select the correct choice below and. if necessary. ll in the answer box to complete your choice. 0 A- The outlier(s) in the data set is(are) :. (Use a comma to separate answers as needed.) 0 B. This data set does not have any outliers. l1. The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the 447 352 443 363 @ past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which 382 524 428 548 the customer should be contacted. What is the cutoff point? 489 312 378 319 425 345 543 495 523 486 4 1 5 400 The cutoff point is minutes. (Round to the nearest minute.) l2. The accompanying data represent the pulse rates (beats per minute) of nine students. Treat the nine students as a population. Compute the z-soores for all the students. Compute the mean and standard deviation of these z-soores. 2 Click the icon to view the data table. Compute the zscores for all the students. Complete the table. Student z-scoro Student z-ecorn Student 1 Student 6 Student 2 Student 7 Student 3 Student 8 Student 4 Student 9 Student 5 (Round to the nearest hundredth as needed.) Compute the mean of these z-soores. The mean of the zsoores is |:l. (Round to the nearest tenth as needed.) Compute the standard deviation of these z-scores. The standard deviation of the zscores is . (Round to the nearest tenth as needed.) 2: Pulse Rates lE Stud ant Pulse Student 1 76 Stude nt 2 60 Student 3 60 Stude nt 4 8 1 Stude nt 5 73 Studs nt 6 80 Studs nt 7 30 Studs nt 8 68 Studs nt 9 73 l3. Violent crimes include rape. robbery, assault. and homicide. The following is a summary of the violentcrime rate (violent crimes per 100,000 population) for all states of a country in a certain year. 01 =272.a. d2 = 387.9. 03 = 529.7 Provide an interpretation of these results. Choose the correct answer below. 0 A. 25% of the states have a violentcrime rate that is 272.8 crimes per 100.000 population or more. 50% of the states have a violentcrime rate that is 387.9 crimes per 100.000 population or more. 75% of the states have a violentcrime rate that is 529.7 crimes per 100.000 population or more. 0 B. 25% of the states have a violentcrime rate that is 272.8 crimes per 100.000 population or less. 50% of the states have a violentcrime rate that is 387.9 crimes per 100.000 population or less. 75% of the states have a violent-crime rate that is 529.7 crimes per 100,000 population or less. 0 C. 75% of the states have a violent-crime rate that is 272.8 crimes per 100.000 population or less. 50% of the states have a violent-crime rate that is 387.9 crimes per 100.000 population or less. 25% of the states have a violent-crime rate that is 529.7 crimes per 100,000 population or less. l4. Suppose the data represent the inches of rainfall in April for a certain city over the course of 20 years. 0.74 1.97 3.54 4.61 Q 1.06 2.19 3.65 5.03 Determine the quartiles. 133 2'43 339 523 1.58 2.85 4.03 5.44 1.74 3.27 4.47 5.76 What are the quartiles? (Round to three decimal places as needed.) 02: (Round to three decimal places as needed.) (Round to three decimal places as needed.) l5. Suppose the data represent the inches of rainfall in April for a certain city over the course of 20 years. Given the quartiles 01 = 1.845. Q2 = 3.600. and 03 = 5.635. detenhine the lower and upper fences. Are there any outliers. according to this criterion? The lower fence is (Round to three decimal places as needed.) The upper fence is . (Round to three decimal places as needed.) Are there any outliers in the given data set? 0 A. No. all the values are between the lower and upper fences. O B. Yes. there are values below the lower fence. 0 C. Yes. there are values above the upper fence and below the lower fence. 0 D. Yes. there are values above the upper fence. "a... ___ ..__ _....:___n n........_ ___... ___... ._._... _...A.. .._ ___.. _.__...__._..__ =._. _. _ _.._=__