Choose the correct answer below. O A. The explanatory variable is the dependent variable. O B. The explanatory variable explains or predicts changes in the response variable. O C. The explanatory variable causes changes in the response variable. O D. All of the above.
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- Complete parts (a) through (h) for the data below. X 3. 4 8. y 8 12 17 20 (a) By hand, draw a scatter diagram treating x as the explanatory variable and y as the response variable. Choose the correct scatter diagram below. O A. Ов. OC. O D. Ay 20- Ay 20- Ay 10- 10- 10 10 0. 10 20 (b) Find the equation of the line containing the points (3,5) and (8,20). y = (Type integers or simplified fractions.) Type here to search 48 F lyp 12 prt sc delete home 14 16 144 144 & unu lock backspace 3 4 8. %24 米The following table contains the number of successes and failures for three categories of a variable. Test whether the proportions are equal for each category at the a =0.01 level of significance. Category 1 Category 2 88 Category 3 = Failures 48 37 Successes 62 68 44 O B. H: The categories of the variable and success and failure are dependent. H,: The categories of the variable and sucess and failure are independent. OC. H: H, =E, and u, = E, and u =E H,: At least one mean is different from what is expected. OD. H,: The calegories of the variable and success and failure are independent. H,: The categories of the variable and success and failure are dependent. What is the P-value? (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer.What is the dependent and independent variable in the sentence below? What is the relationship between genderand A level of exam results?
- Christine is a sales manager for a car rental company. She has a scatterplot with data regarding the years of experience of sales representatives and percent of satisfied customers. What information would the scatterplot below indicate? Select all that apply. 100 90 80 70 50 40 30 20 10 1 3 5 6 7 Years of Experience of Salesperson O Satisfaction rate is the independent variable. O Satisfaction rate is the dependent variable. O Years of experience is the independent variable. O Years of experience is the dependent variable. O Christine should consider customer satisfaction training for her more novice representatives. O There is a positive correlation between years of experience and customer satisfaction. O There is a negative correlation between years of experience and customer satisfaction. O There is no correlation between years of experience and customer satisfaction. Percent of Satisfied CustomersWhich among the following is considered as health outcome? DISSATISFACTION DESTITUTION IMPROVED HEALTH SEEKING BEHAVIOR GETTING VACCINATED AFTER HEALTH EDUCATION A. I and II B. I, II and III C. I, II, III, IV D. III AND IVQ.2) A manager at the delivery company recorded the mean and median delivery cost, but unfortunately lost the paper on which the values were recorded. However, the manager can remember that one value was about $4.00 and the other was about $4.40. Which value is the mean and which is the median? i. $4.00 is the mean and $4.40 is the median. ii. ii. $4.40 is the mean and $4.00 is the median. iii. It's impossible to tell which is which. 111. Q.3) Which of the following sets of four numbers has the largest standard deviation? (а) 100, 101, 102, 103 (b) 7, 8, 9, 10 (с) 5, 5, 5, 5 (d) 0, 1, 2, 3 (e) 0, 0, 10, 10
- James Trucking is studying the relationship between the distance a shipment must travel and the length of time, in days, it takes the shipment to arrive at its destination. To investigate, Mr. James, the manager of the company selected a random sample of 20 shipments made last month. Shipping distance is the independent variable, and shipping time is the dependent variable. The results are as follows: Shipment Distance (miles) Shipping Time (days) 1 656 5 2 853 14 3 646 6 4 783 11 5 610 8 6 841 10 7 785 9 8 639 9 9 762 10 10 762 9 11 862 7 12 679 5 13 835 13 14 607 3 15 665 8 16 647 7 17 685 10 18 720 8 19 652 6 20 828 10 Is the relationship between shipping distance and shipping time significant, if the level of significance is 5%? What is the standard error? The standard error is ; The relationship between…Two types of categorical variables are a. Nominal and Ordinal b. Descriptive and Numerical c. Categorical and Descriptive d. Categorical and InferentialWhat is the difference between an observational study and an experiment? Choose the correct answer below. O A. In an experiment, a treatment is applied to part of a population and responses are observed. In an observational study, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. O B. In an experiment, a researcher measures characteristics of interest of an entire population but does not change existing conditions. In an observational study, a treatment is applied to an entire population and responses are observed. O C. In an experiment, a treatment is applied to an entire population and responses are observed. In an observational study, a researcher measures characteristics of interest of an entire population but does not change existing conditions. O D. In an experiment, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. In an observational study, a…
- Identify the letter of the choice that best completes the statement or answers the question. 1. Inferential statistics are used to a. infer the population results to the sample. b. infer the sample results to the population. c. infer our knowledge of statistics to social science. d. infer our knowledge to the instructor. 2. In the study of handedness (left-handed vs. right-handed) and athletic ability, the dependent variable is: a. handedness b. athletic ability c. not described d. both a and b 3. One problem with the range as a measure of dispersion is that it: a. is difficult to compute. b. ignores the extreme scores. c. is based only on the extreme scores. d. takes into account all of the observations in a distribution.The head of the marketing division of a leading chocolate manufacturer must decide among our different wrapper styles for the chocolate. To provide a database for the decision, he has the chocolate placed in the different wrappers and distributes them to five supermarkets. At the end of 2 weeks, he finds that the following amounts of chocolate were sold: Wrapper A Wrapper B Wrapper C Wrapper D 90 98 130 82 State the dependent and independent variable Is this directional or non directional testDetermine whether the underlined value is a parameter or a statistic. Telephone interviews of 1,502 adults 18 years of age or older found that only 69% could identify the current vice-president. Is the value a parameter or a statistic? OA. The value is a statistic because the 1,502 adults 18 years of age or older are a population. B. The value is a parameter because the 1,502 adults 18 years of age or older are a population. C. The value is a statistic because the 1,502 adults 18 years of age or older are a sample. OD. The value is a parameter because the 1,502 adults 18 years of age or older are a sample.