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For the following exercises, consider this scenario: The population of a city increased steadily over a ten-year span.The following ordered pairs shows the population and the year over the ten-year span, (population, year) for specific recorded years:
37. Use linear regression to determine a
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- esc 1 ock 8 Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 5 weeks with no radios sold, 23 weeks with one radio sold, 24 weeks with two radios sold, 32 weeks with three radios sold, 10 weeks with four radios sold, and 6 weeks with five radios sold. Calculate H, 0², and 0 of x, the number of ClearTone-400 radios sold at Sound City during a week using the estimated probability distribution. (Round your answers to 2 decimal places.) 8 015744 Mc Graw Hill ! 1 LX ax^2 ox ← A N NO 2 W S #3 X C 1 control option command H E חח D S4 $ C R LL F % 5 ☆ U N * 00 8 J + 1 ( ( 9 M K ) O 0 1 96 L 4 P R .arrow_forwardUse excel in this question: The Motion Picture Distributors Association of Australia collects yearly data on gross box office takings of the films in Australia. Data is provided here for the years 1990-2004. (Unfortunately more recent data is not readily available.) Is the highest box office takings for a film related to the number of films screened in Australia that year? Year No. of films screened Highest box office ($ million) 1990 252 26.1 1991 240 19.22 1992 229 18.73 1993 259 31.74 1994 252 24.65 1995 253 17.93 1996 281 29.29 1997 285 22.7 1998 273 47.33 1999 255 38.72 2000 250 30.72 2001 245 32.05 2002 258 33.81 2003 268 37.14 2004 318 50.35 1. Produce a scatterplot of the relevant data. Comment on the appropriateness of analysing this data using a linear regression model. 2. Use the statistics from a regression analysis of this data to evaluate the evidence for a useful predictive linear relationship between the two variables at the 5%…arrow_forwardy 700 650 600 550 500 450 400 350 300 250 200 150 100 50 20 40 60 80 Time (s) Height (m)arrow_forward
- ps14arrow_forwardMatch these values of r with the accompanying scatterplots: -1, -0.788, -0.998, 1, and 0.998. Click the icon to view the scatterplots. Match the values of r to the scatterplots. Scatterplot 1, r= 1 Scatterplot 2, r=-0.998 Scatterplot 3, r= -1 Scatterplot 4, r= 0.998 Scatterplot 5, r=-0.788 n example Get more help Scatterplots A 15- 14- 13- 12- 2 10 8 6 4- 2- Scatterplot 1 7 0 0.2 0.4 0.6 0.8 Scatterplot 4 0 0 0.2 0.4 0.6 0.8 X 다 O Print 2 6 0 . Scatterplot 2 0.2 0.4 0.6 0.8 X 1 Scatterplot 5 -8- 0 0.2 0.4 0.6 0.8 X Done 1 Q O G A 9 2 3 Scat 0 0.2 0.4 . Xarrow_forwardMatch these values of r with the accompanying scatterplots: -0.683, 0.32, 0.683, 1, and 0.32. Click the icon to view the scatterplots. Match the values of r to the scatterplots. Scatterplot 1, r= Scatterplot 2, r = Scatterplot 3, r= Scatterplot 4, r= Scatterplot 5, r= ▼ V ▼ V Scatterplots Scatterplot 1 * 0.2 0.4 0.6 0.8 1 4 X Scatterplot 4 0.2 0.4 0.6 0.8 X 1 Q LY Q 8- 6- 2+ 0- 8 0 6- 4- 2+ 0- 0 Scatterplot 2 Print 0.2 0.4 0.6 0.8 X . Scatterplot 5 x + T 0.2 0.4 0.6 0.8 1 1 Q Q Done C 8- 6- 4- 2- to 0 . Scatterplot 3 . 0.2 0.4 0.6 0.8 X Xarrow_forward
- Σ k =arrow_forwarda-d pleasearrow_forwardThe U.S. Geological Survey monitors and reports on earthquakes, providing daily real-time, worldwide earthquake lists. Some of the information for four of the 105 earthquakes of magnitude 1.5 or greater that occurred on May 10, 2013, is shown in the following table. Magnitude is given on the Richter scale and NST stands for the number of stations that reported the activity on the same earthquake. Complete parts (a) through (e) below. Time Magnitude Depth (km) NST Region 00:03:16 1.7 75.9 29 Alaska 04:59:11 1.7 134.9 18 Alaska 08:27:04 2.8 64.0 21 Alaska 23:30:09 4.2 10.0 34 China a. Identify the type of data provided by the information in the first column of the table. Also identify the variable under consideration. Quantitative, Continuous, Qualitative, Quantitative, Discrete, region where the earthquake occurred depth of the earthquake in kilometers number of stations reporting the earthquake…arrow_forward
- The quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 5% level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.6 6.3 4.6…arrow_forwardThe quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 5% level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.1 6.6 4.6…arrow_forwardThe quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in a river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water discharge point and near the shore. Location II was 200 meters above the discharge point and in midstream. Location III was 50 meters downstream from the discharge point and near the shore. Location IV was 200 meters downstream from the discharge point and in midstream. The following table shows the results. Lower dissolved oxygen readings mean more pollution. Because of the difficulty in getting midstream samples, ecology students collecting the data had fewer of these samples. Use a 1%level of significance. Do we reject or not reject the claim that the quantity of dissolved oxygen does not vary from one location to another? Location I Location II Location III Location IV 7.6 6.7 4.8 4.9…arrow_forward
- Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning