5) The marketing director of Sea advertising campaign. The Director recorded the advertising cost and the number of tickest sold in the last eight months. The data is shown in the table below ad was sorted in ascending order By advertising cost. Advertising cost, in thousands USD (x) 60.51 68.60 74.52 75.11 75.43 79.34 81.15 82.42 Number of tickets sold, 1.22 1.57 1.98 2.19 1.75 2.03 2.38 2.23 in thousands (y) Suppose the number of tickets sold varies linearly with the advertising cost. a) Find the Pearson's product moment correlation coefficient, r, for this data. 85 b) Find the equation of the regression line y on x. c) The Marketing Director decides to spend $70000 on advertising next month. Use the couation of the regression line found in nart (a) to estimate the number of tickets sold

Q: alculate the coefficient of determination r2 Interpret the result.

A: The data can be entered in excel as:

Q: A pediatrician wants to determine the relation that may exist between a child's height and head…

A: Introduction: Consider that there are n pairs of observations of variables the x and y. The formula…

Q: Use a stem and leaf plot that has two rows for each stem to display the data, which represents the…

A: Solution: Given data:…

Q: Determine the mode percent of white persons living below poverty This will be the 2nd column

A: Arrange the given data in ascending order: 6.1, 8.5, 9.4, 9.6, 9.7, 9.8, 9.9, 10, 10.5, 10.5, 10.9,…

Q: The most popular colors for compact and sports cars in a recent year aregiven in the table. See…

A: Solution:We are given the below data:

Q: find 75th percentile for given data  25,89,63,4,5,42,65,63,54,41,68,98,9,75,25,15,49

A:

Q: find 30th percentile for data 10,15,16,18,19,21,23,25,26,28,32,35,36,39,42,45,46,50

A: Given 10,15,16,18,19,21,23,25,26,28,32,35,36,39,42,45,46,50

Q: Code Churn is a common metric used to measure the efficiency and productivity of software engineers…

A: Given Programmer Total lines of code Written Number of lines of code Requiring Edits Liwei…

Q: find out the 89th percentile for given data  78,78,98,45,87,36,5,2,3,7,7

A: We have to find the 89th percentile for given data.  First  arrange the given data in ascending…

Q: Which data would be most suitable for a pie chart? A. A corporation's sales revenue for the last 5…

A: According to measurement, statistics, data can be classified in two types, such as quantitative data…

Q: alculate the median of the data shown, to two decimal places, 24.4,11.1,2.1,29,8.7,6.9,6.6,1.1

A: The given data is 24.4,11.1,2.1,29,8.7,6.9,6.6,1.1

Q: 2. Sketch a Pie chart for the variable Phone. Describe the data distribution. iPhone iPhone iPhone…

A: Mobile phone data related to different models is given and we were asked to sketch a pie chart.…

Q: Some students were asked about the amounts of their daily allowances, and their responses were…

A:

Q: Find the median of data file

A: Given data are,92, 34, 40, 105, 83, 55, 56, 49, 40, 76, 48, 96, 93, 74, 73, 78, 93, 100, 53, 82Total…

Q: 30 23 58 28 35 67 27 42 46 35 51 30 18 33 25 38 48 36 31 39 a. Construct a grouped frequency…

A: Arrange the all observations in ascending order 18, 23, 25, 27, 28, 30, 30, 31, 33, 35, 36, 38, 39,…

Q: The following boxplot illustrates the song length (in seconds) of the top 50 songs on Spotify in…

A: The median is the middlemost value of the dataset. So here Median corresponds to the one that lies…

Q: Calculate the 17th and 67th percentiles of the data set shown below.

A: The data set is given of 8 observations.  To find the 17th and 67th percentile of the data. Here…

Q: 2. Find the mean, median, and mode of each set of data: a. 45 48 56 62 75 75 78 84 b. 3 48 56 62 75…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: find mode of data  45,45,12,1,,4,5,6,7,8,45,56,789,65,45,23,12.97

A:

Q: A high school has 40 players on the football team. The summary of the players' weights is given in…

A:

Q: Use the following Data Set.0.09 ,0.11 ,0.11 ,0.13 ,0.14 ,0.15 ,0.17 ,0.17 ,0.18 ,0.18 ,0.23 ,0.35(a)…

A: write the given data in ascending order.             Q1 = 0.12     Median = 0.15+0.172=0.160.09 ,…