The following data are given based on 10 pairs of observations on Y and X. Given the population regression function (PRF) Y = ß, + B,X,+ j, answer the following questions: X Y 120 31 72 55 67 59 135 115 34 106 98 43 95 83 49 75 53 28 36 46
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Determine the PRF.
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- Y=16.8-3.9x (3.8) (1.2) The numbers 16.8 and -3.9 are the realized values for the intercept and slope (respectively) of the regression equation describing the sample, which are consistent estimators for what population parameters? The intercept and slope (respectively) of the sample determining function. The intercept and slope (respectively) of the regression equation that best fits the population. Instructions: Enter your responses rounded to three decimal places. If you are entering any negative numbers be sure to include a negative sign (-) in front of those numbers: provide a 99% confidence interval for each estimator's corresponding population parameter Intercept (----------) (----------) Slope (---------) (-------------)A life insurance company wishes to examine the relationship between the amount of life insurance held by a family and family income. From a random sample of households, the company collected the accompanying INCOME 97 INSUR 38 data. The data are in units of thousands of dollars. INSUR 141 29 Let y = 280 75 X = INCOME 303 81 453 137 357 77 199 43 251 53 807 184 147 45 272 70 537 128 527 117 245 55 483 116 673 204 194 46 154 51 163 48 280 69 507 140 464 136 321 71 873 206 476 144 574 111 251 65 497 130 826 171 133 32 259 82 281 73 446 146 3 The vertical intercept of the estimated regression equation is 332 77 a 11.009 219 48 b 9.830 208 55 8.776 180 48 d 7.836 169 42 273 69 502 127 547 126 281 80 428 143 370 77 221 49 214 51In the following scenario what is the population and sample. In a study of Monarch butterflies, 55 milkweed plants in a Yosemite Valle were randomly sampled. The average number of Monarch eggs per plant was 0.73. [ Select ] The population of interest is [ Select ] The sample is MacBook Pro 888 ::: 23 & 4 6. 7 E R T Y U F G H J K C V comman V - * 00
- We have estimated the impact of gross domestic product (GDP), energy consumption (ENERGY) and population (POP) on CO2 emiisions (CO2) in Cyprus. The results are as follows, Dependent Variable: CO2 Method: Least Squares Date: 04/20/17 Time: 09.46 Sample: 1990 2013 Included observations: 24 Variable Coefficient Std. Error t-Statistic Prob. GDP ENERGY POP 2.002813 0.022114 -0.734352 0.203927 6.458672 0.011872 0.328388 0.293686 0,310097 1.862670 -2.236233 0.694371 0.7597 0.0773 0,0369 0.4954 R-squared Adjusted R-squared S.E. of regression Sum squared resid Log likelihood F-statistic Prob(F-statistic) 0.825079 Mean dependentyar 0.798841 0.048515 Akaike info criterion 0.047074 Schwarz criterion 40.75460 Hannan-Quinn.criter. 31.44583 Durbin-Wats on stat 0.000000 3.625982 0.108170 -3.062883 -2.866541 -3.010793 1.410912 S.D. dependent yar a Write down the economie function for the above estimation by using the information obtained from above table| b- Write down the economic model for the above…UBC coaching center has two branches in Dhaka: one in Dhanmondi (Branch A) and another one in Mohammadpur (Branch B). To understand their students' performance, the coaching center conducts the same test in both branches. A sample of 8 students have been selected from branches A and B respectively, and the following table shows data on their performance. Use appropriate non-parametric methods on the data to find out whether there is a statistically significant correlation between the ranks of the students’ performance of the two branches.?You need to research about (Personal finance management) using a sample . Describe the steps to be taken in order to use the stratified sampling technique .
- The birthweight (in kg) of 55 babies are tabulated in the frequency distribution below: Birthweight (kg) Class Midpoint Frequency M (1– 1.5| (1.5-2 1.25 6. 1.75 10 (2- 2.5) 2.25 1 (2.5-3) 2.75 15 10 (3-3.5] 3.25 3. (3.5- 4) 3.75 55 Total Calculate the relative frequency of the class interval (2 - 2.5).Supposed a study using a random sample of postgraduate students in Sydney found that the average amount of time spent using a mobile phone per day is 5.5 hours. Indicate whether the quantity described above is a population parameter or a sample statistic, and write down the notation. Hints: You may type in how you read the notation, instead of using the symbol itself. E,g. you can write "mu" or "xbar" or "phat" or "rho" or "sigma" for the Greek alphabet or special symbol.T or F A household is frequently used in analyses because more consistent data are usually collected at that level.
- OA large city hospital conducted a study to investigate the relationship between the number of unauthorized days that employees are absent per year and the distance (miles) between home and work for the employees. A sample of 10 employees was selected and the following data were collected. D Excel file: data14-13.xlsx Distance to Work Number of Days (miles) Absent 8. 8. 9. 8 6. 10 12 14 14 4 18 If required, enter negative values as negative numbers. a. Select the correct scatter diagram for these data. A. Number of Days Absent 10+ 8+ . 6- 2+ 8. 10 12 14 16 18 20 Distance to Work (miles) 4.A political pollster wants to ensure that their poll on attitudes toward separation of church and state gets responses from all major religious groups. What kind of sampling method should be used?Problems-2: The following data shows birth weights (oz) from seven consecutive deliveries at the Johns Hopkins Hospital in April 2019. 5 121 138 32 100 58 64 a) Calculate =74 a median birth we =64 mights: =48.06593 d) Suppose this is a representative sample of births in a given year at Johns Hopkins. Suppose, instead of a sample of seven values, we have a sample of 100 birth weights. How should the mean, median, and standard deviation of this sample compare to the same statistics for the sample of seven birth weights?