Solve the following statistical question.
When survey data indicated that a company needed to improve its package-sealing process, an experiment was conducted to determine the factors in the bag sealing equipment that might be affecting the ease of opening the bags without tearing the inner liner of the bag. Data were collected on 19 bags and the plate gap on the bag-sealing equipment was used to predict the tear rating of a bag. a. Is it necessary to compute the Durbin-Watson statistic in this case? Explain. b. Under what circumstances is it necessary to compute the Durbin-Watson statistic before proceeding with the least-squares method of regression analysis? O A. Yes, it is always necessary to compute the Durbin-Watson statistic, O B. No, because the number of observations is sufficiently small that autocorrelation is not a concern. O C. Yes, because the number of observations is sufficiently small that autocorrelation is a concern. O D. No, because the data were not collected over time. b. Select the correct answer below O A. It is always necessary to compute the Durbin-Watson statistic O B. If the survey involved collecting data over time, it would be necessary to compute the Durbin-Watson statistic. O C. If fewer bags had been selected, it would be necessary to compute the Durbin-Watson statistic. ()D. If a larger number of bags had been selected. It would be necessary to compute the Durbin-Watson statistic. Click to select your answer.Determine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The square footage of a house b. The amount of snowfall in December in City A c. The eye color of people on commercial aircraft flights d. The amount of rain In City B during April e. The time required to download a file from the Internet f. The number of points scored during a basketball game a. Is the square footage of a house a discrete random variable, a continuous random variable, or not a random variable?; O A. It is a continuous random variable O B. It is a discrete random variable. O C. It is not a random variable b, is the amount of snowfall in December in City A a discrete random variable, a continuous random variable, or not a random variable? O A. It is a continuous random variable O B. I is a discrete random variable O C. It is not a random variable C. Is the eye color of people on commercial aircraft flights a discrete random variable, a continuous random variable, or not a random variable? O A. It is a discrete random variable O B. It is a continuous random variable O C. it is not a random variable. d. h the amount of rain in City B during April a discrete random variable, a continuous random variable, or not a random variable? Click to select your answerDetermine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The time required to download a file from the Internet b. The number of light bulbs that burn out in the next week in a room with 16 bulbs c. The gender of college students d. The exact time it takes to evaluate 27 + 72 e. The weight of a T-bone steak f. The number of people in a restaurant that has a capacity of 300 a. Is the time required to download a file from the Internet a discrete random variable, a continuous random variable, or not a random variable? O A. It is a discrete random variable. O B. It is a continuous random variable O C. It is not a random variable. b. Is the number of light bulbs that burn out in the next week in a room with 10 bulbs a discrete random variat i random variable, or not a random variable? O A. It is a discrete random variable, Q B. It is a continuous random variable. O C. It is not a random variable c, Is the gender of college students a discrete random variable, a continuous random variable, or not a random va O A. It is a continuous random variable (3) B. It is a discrete random variable. O C. It is not a random variable.Determine whether the following value is a continuous random variable, discrete random variable, or not a random variable. a. The amount of rainfall in a country in a year b. The hair color of adults in the United States c. The number of runs scored during a baseball game d. The weight of a hamburger e. The height of a randomly selected person f. The time required to upload a file to the Internet a. Is the amount of rainfall in a country in a year a discrete random variable, continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. b. Is the hair color of adults in the United States a discrete random variable, continuous random variable, or not a random variable? O A. It is a discrete random variable. O B. It is a continuous random variable. O C. It is not a random variable. c. Is the number of runs scored during a baseball game a discrete random variable, continuous random variable, or not a random variab O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. d. Is the weight of a hamburger a discrete random variable, continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable.The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of pet food. A random sample of 12 equal-sized stores is selected. The shelf space (X) and sales for the week in dollars (Y) are observed. a. Is it necessary to compute the Durbin-Watson statistic in this case? Explain. b. Under what circumstances is it necessary to compute the Durbin-Watson statistic before proceeding with the least-squares method of regression analysis? a. Select the correct answer below. OA. Yes, because the number of observations is sufficiently small that autocorrelation is a concern. OB. No, because the number of observations is sufficiently small that autocorrelation is not a concern. Oc. No, because the data were not collected over time. OD. Yes, it is always necessary to compute the Durbin-Watson statistic. b. Select the correct answer below. OA. If a single store had been selected and studied over a period of time, it would be necessary to compute the Durbin-Watson statistic. OB. If fewer stores had been selected, it would be necessary to compute the Durbin-Watson statistic. Oc. If a larger number of stores had been selected, it would be necessary to compute the Durbin-Watson statistic. OD. It is always necessary to compute the Durbin-Watson statistic
