QUESTION 18 The number of words that a typıst can type per minute iIs an example of a 1 quantitative variable, discrete data 2 qualitative variable, continuous data 3 quantitative variable, continuous data 4 qualitative variable, discrete data 5 qualitative data varıable
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- A lecturer at WIN wanted to know if he can predict student’s quiz results by asking them to complete a simple survey. The result of the survey is found in the file: Assignment 2 sem22020 data set 1.Quiz ResultActual Mark (0-15) for quiz student attainedEQRQuiz score (0-15) expected to get before taking the quizStudy Hrs.Number of hours per week (on average) spent studying for StatisticsAgeAge (in years)BBTSatisfaction rating of Big Bang TheorySexM=1 F=0MBMB=1 for good math background, otherwise 0MCMC= 1 if math centre is used regularly, otherwise 0AuHSAuHS = 1 if student completed high school in Australia, otherwise 0LMLM=1 if student likes math, 0 otherwiseTask 1: Variable List(a) Using the variables listed in the table above, Describe each variable.(b) State for each variable whether it is qualitative or quantitative; if it is qualitative, state whether it is nominal or ordinal, and if it is quantitative, state whether it is discrete or continuous.Task 2: HistogramCreate a histogram…A healthcare provider monitors the number of CAT scans performed each month in each of its clinics. The most recent year of data for a particular clinic follows (the reported variable is the number of CAT scans each month expressed as the number of CAT scans per thousand members of the health plan): 2.31, 2.09, 2.36, 1.95, 1.98, 2.25, 2.16, 2.07, 1.88, 1.94, 1.97, 2.02.(a) Find a 95% two-sided CI on the mean number of CAT scans performed each month at this clinic.(b) Historically, the mean number of scans performed by all clinics in the system has been 1.95. If there any evidence that this particular clinic performs more CAT scans on average than the overall system average?A study was conducted to measure the effect of smoking upon birth weight of a baby. The following variables were measured for each woman in the study. Smoking status (yes, no), number of children in the family, birth date, baby birth weight. Which is the correct classification of these variables? Qualitative, continuous, qualitative, continuous Qualitative, discrete, qualitative, continuous Quantitative, continuous, qualitative, discrete Qualitative, discrete, quantitative, continuous
- Determine whether the data are discrete or continuous. Number of phone calls received during one day at a poison control centerSuppose a researcher believes that the occurrence of natural disasters such as earthquakes leads to increased activity in the construction industry. he decides to collect province-level data on employment in the construction industry of an earthquake-prone country, like Japan, and regress this variable on an indicator variable that equals 1 if an earthquake took place in that province in the last five years. a. Should the researcher include province fixed effects in order to control for location specific characteristics of the labor market? b. What can the researcher to control for the location effects?The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, the data collected are shown below. Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R and x bar charts. Click on the datafile logo to reference the data. Use Table 19.3. R Chart: (to 2 decimals). If your answer is zero enter “0”. UCL= LCL= x bar Chart: (to 1 decimal) UCL= LCL=
- What are the criteria and steps needed to take to asses the degree in which an independent variable causes changes observed in the dependant variable?Allan Company tracks 8 primary quality characteristics during production of a particular type of coffee maker (the characteristics in this case are ‘opportunities’ that represent the number of critical features that must be correct and therefore represent potential sources of mistakes or errors). After a review of 370 random coffee makers, a team of inspectors finds a total of 22 mistakes. Let each coffee maker represent one “unit”. Notice that on average, the number of mistakes per coffee maker would be 22/370 = 0.0595 dpu. On average, how many mistakes are there per opportunity (i.e., “dpo”)? Use 3 decimal places.Compute the Correlational Analysis:
- If a researcher wants to find out the average monthly expenses of all university students in Edmonton, this average would be an example of ________ . a. samplecross out b. statisticcross out c. populationcross out d. parameterThe Us food and Drug administration has a limit for mercury content in fish of 1.0ppm (parts per million) while in Canada the limit is 0.5 ppm. Using the variable average mercury in the Florida lakes dataset to test whether there is evidence that average mercury level of fish ( large mouth Bass) in Florida lakes is less than 1.0ppm and whether there is evidence that average mercury level of fish in Florida lakes is less than 0.5ppm. STATE THE NULL AND ALTERNATIVE HYPOTHESES? GIVE THE TEST STATISTICS AND P-VALUE? round the test statistic to two decimal places and the p-value to three decimal places. DOES THIS SAMPLE PROVIDE EVIDENCE THAT THE AVERAGE MERCURY LEVEL OF FISH (LARGE MOUTH BASS) IN FLORIDA LAKES IS LESS THAN 1.0PPM? LESS THAN 0.5 PPM : STATE THE NULL AND ALTERNATIVE HYPOTHESES. GIVE THE TEST STATISTICS AND P-VALUE ? round the test statistic to two decimal places and the p-value to three decimal places. DOES THIS SAMPLE PROVIDE EVIDENCE THAT THE AVERAGE MERCURY…The department of education ran a very comprehensive study in the 1990's to determine the GPA of first generation college students (those who are the first in their family to go to college) in their freshman year. The mean GPA for first generation college students was stated in teh report to be 2.37 for males and 2.21 for females. In 2018, a consumer advocacy group is interested in whether the average GPA for first generation college females was still smaller than their male counterparts. Assume the GPA's are normally distributed. A. State the null hypothesis and the alternative hypothesis. Is the advocacy group interested in a one tail or two tail test (brief explanation)? B. Find the value of the test statistic and an associated p-value (or a range for teh p-value) if 25 males SAR yielded an average GPA 2.46 with a standard deviation of 0.16 and 25 females SAR yeilded an average GPA 2.39 with a standard deviation of 0.12. C. Determine if the test requires use of the Z table or…