Find the coefficient of correlation between the sales and expenses of the following 10 firms: Firms Sales ('000) Expenses ("000) : 1 2 : 50 50 3 4 5 7 65 8 9 10 55 60 65 65 60 60 50 : 11 13 14 14 16 15 15 14 13 13

Q: 9. (а) Consider the data set of (х, у) рairs below. {(1, 2), (1, 4), (2, 4), (2, 6), (3, 6), (3, 8),…

A: method of least square: This method is a form of mathematical regression analysis used to determine…

Q: The value y (in 1982-1984 dollars) of each dollar paid by consumers in each of the years from 1994…

A: a) The independent variable is t (year) and the dependent variable is dollar (y) paid by consumer.

Q: Use the scatterplot of Vehicle Registrations below to answer the questions Vehicle Registrations in…

A: Given plot is number of vehicle Registration in millions Vs Year    and there a black color straight…

Q: please help me find, The relative frequency of workers who took 10 or fewer sick days, The…

A: Given that  Number of days = X Frequency = F 1-5 120 6-10 65 11-15 14 16-20 1

Q: Suppose that the following data is the total annual incomes (rounded to thousands) for all 30 staffs…

A: Frequency distribution is used to know that, how the data is frequently repeated in a specified…

Q: If the correlation coefficient is close to -1, the linear relationship between two variables is very…

A: We have to check weather the given statement is True or False.

Q: company is also shown. % Working % 67

A: * Hi! Thank you for the question, As per the honour code, we are allowed to answer three sub-parts…

Q: (c) "The correlation between height and weight of the subjects was r = 0.63 centimeters." Choose the…

A: Correlation: The extent linear relation between the two variables is called correlation. Positive…

Q: Complete the table** 1) A sample of data is collected (from 1999 and 2000) concerning the…

A: Solution: Given information: n= 1000 observation.  k= 6 independent variables p= 7 total number of…

Q: Find Karl Pearson's coefficient of correlation between sales and expenses of the föllowing ten firms…

A:

Q: What is the sampling distribution of x when µ = 0? Normal with mean 0 and standard deviation 60.…

A: The population mean is 0.

Q: What is the correlation between the age and monthly salary of 10 employees?

A: Given: Age Salary 38 24 33 40 30 30 36 34 31 28 38 32 29 47 35 40 33 29 30…

Q: / Sp8. A company launched a sales campaign and appointed 110 salesmen for this purpose. At the end…

A:

Q: For the following pairs of data points (10, 100), (8, 120), (5, 200), (4, 200), (10, 90), (7, 110) ,…

A: Follow the steps below to get the Regression equation Table in excel: 1) Import the data in the…

Q: 1. Find the co-efficient of correlation between sales and expenses of the following ten firms Firm 2…

A: 1. The table is given as: Sales Expenses  50 11 50 13 55 14 60 16 65 16 65 15 65 15…

Q: A researcher would like to know if the gestation period of an animal can be used to predict the life…

A: Let Gestation Period be denoted as x and Life expectancy be denoted by y. x y 63 11 22 7.5…

Q: a) Is there a significant correlation between working time and average weight? b) Develop the simple…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks The following…

Q: For each pair of quantities, decide if the correlation coefficient would be dose to 1, dose to -1,…

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

Q: For eight consecutive months, a factory manager recorded the number of items produced (x, in 00’s)…

A: Given information- We have given the table summarizes the manager's data- X = The number of items…

Q: 6.1 2) A college professor decided to examine whether or not there is a relationship between the…

A: Scatter graph is a type of graph that depicts the relationship between the two variables. There are…

Q: Because a partial correlation considers the influence of a third variable, it is possible to have a…

A: From the above question Because a partial correlation considers the influence of a third variable,…

Q: On wishes to test H0H0: μ=880μ=880   vs   HaHa: μ<880μ<880.  A random sample with size 20 produced…

A: H0: μ=880 vs   Ha: μ&lt;880 It is a left tailed test.

Q: Assess whether there is a difference between the incidence rate of breast cancer for premenopausal…

A: Problem 1: State the null and alternative hypotheses: Null hypothesis: There is no significant…

Q: Represent the following data by means of a histogram. Weekly Wages ( 00 ) : 10-15 15-20 20-25 25-30…

A: Let weekly wages on Y axis and number of workers on X axis.

Q: A study was conducted to determine whether the final grade of a student in an introductory…

A:

Q: I need help with trying to solve (b) Please help.

A: GenerationxyMillennials3936Gen X5451Boomers6558Silent/Greatest Generation7366

Q: The scatter plot below shows the average number of customers who visit a food truck per day,…

A:

Q: If you look at many cities in the United States, there is a positive correlation between the number…

A: here given , If you look at many cities in the United States, there is a positive correlation…

Q: Suppose that the following data is the total annual incomes (rounded to thousands) for all 30 staffs…

A: Note that to calculate the provided descriptive statistics we have to first change our non…

Q: The boxplot below shows salaries for Construction workers and Teachers. Construction Teacher 20 25…

A: The median is middle value of the observations, above or below which 50% of the observations lie.