1. The two-way table displays data about 55 different locations. Scientists have a lie possible chemicals that may influence the health of the coral. They first look at how nitrate concentration might be related to coral health. The table displays the health of the coral (healthy or unhealthy) and nitrate concentration (low or high). low nitrate concentration high nitrate concentration total healthy 20 5. 25 unhealthy 8 22 30 total 28 27 55 a. Complete the two-way relative frequency table for the data in the two-way table in which the relative frequencies are based on the total for each column. low nitrate concentration high nitrate concentration healthy unhealthy total 100% 100% b. When there is a low nitrate concentration, which had a higher relative frequency, healthy or unhealthy coral? c. When there is a high nitrate concentration, is there a higher relative frequency of healthy or unhealthy coral?

B please. Table included

Please answer the following question: Is there any relationship between the type of malaria and the tropical zone of contagious?

The best predicted weight for a bear with a chest size of 51 inches is ? pounds. Is the result close to the actual weight of 452 pounds?     A. This result is very close to the actual weight of the bear.   B. This result is close to the actual weight of the bear.   C. This result is not very close to the actual weight of the bear.   D. This result is exactly the same as the actual weight of the bear.

The above figure shows variations and means of data sets A and B visually. Which of the following statement is TRUE about this figure?  answer choices 1.Means of data sets A and B are different. 2.Variations of both data sets are same. 3.Data set A has higher variation than data set B. 4.Data set B has higher variation than data set A.

2. A real estate expert wanted to find the relationship between the sale price of houses and various characteristics of the houses. He collected data on five variables, recorded in the table, for 12 houses that were sold recently. The five variables are: Sale price of a house in thousands of dollars. Size of the lot in acres. Price: Lot Size: Living Area: Living area in square feet. Age: Type of house: town house (T) or Villa (V) Age of a house in years. Living Area Price Lot Size Age Туре of house 255 1.4 2500 8 T 178 0.9 2250 12 263 1.8 2900 127 0.7 1800 24 305 2.6 3200 10 164 1.2 2400 18 245 2.1 2700 9 146 1.1 2050 28 287 2.8 2850 13 189 1.6 2600 9 211 1.7 2300 8. 123 0.5 1700 11 a) Find the general regression equation b) Which independent variables are linearly related to price? c) How is the fit of the model? E BBBB BB>>}>> >{

An economic organization tracks summary statistics of various countries. These include GDP (gross domestic product per capita) and trade balances (measured as a percentage of GDP). Exporting countries tend to have large positive trade balances. Importers have negative balances. The data are shown in the accompanying table. Formulate the SRM with GDP as the response and Trade Balance as the explanatory variable. Complete parts (a) through (c) below. Click the icon to view the data table. (a) Country X reported the highest positive balance of trade, 24.2% of GDP and per capita GDP equal to $63,000. Fit the least squares equation both with and without country X and compare the results. Does the fitted slope change by very much? Find the least squares equation without country X. Complete the equation below. Estimated GDP ($ per cap) = ☐ ☐ Trade Bal (%GDP) (Round to the nearest integer as needed.) Data Table - X Trade Balance (%GDP) GDP ($ per capita) -6.3 16,876 15.7 44,932 -0.9 9,334 -7.9…

4. What graphical display is the most suitable to show whether there is a relationship between the age of a person and the number of hours per week spent on exercising?

Match the definition to the correct vocabulary word. 1. a statistical tool that shows the observed frequencies of two variables; one variable is listed in a row and another variable is listed in columns 2. when a relative frequency is determined by a row or column 3. the ratio of a frequency of a particular category to the entire set of data 4. the ratio of the sum of the joint frequencies in a row of a column over the total number of data values 5. the ratio of individual occurrences over the total occurrences   a. joint frequency b. relative frequency c. marginal frequency d. two-way table e. conditional relative frequency

2. A real estate expert wanted to find the relationship between the sale price of houses and various characteristics of the houses. He collected data on five variables, recorded in the table, for 12 houses that were sold recently. The five variables are: Sale price of a house in thousands of dollars. Size of the lot in acres. Price: Lot Size: Living Area: Living area in square feet. Age: Type of house: town house (T) or Villa (V) Age of a house in years. Price Lot Size Living Area Age Туре of house 255 1.4 2500 8 T 178 0.9 2250 12 T T. T. T. 263 1.8 2900 5 0.7 2.6 127 1800 24 305 3200 10 164 1.2 2400 18 245 2.1 2700 T V 146 1.1 2050 28 287 2.8 2850 13 V 189 1.6 2600 9 211 1.7 2300 8 V 123 0.5 1700 11 V a) Find the regression equation for the town house b) Find the regression equation for the Villa c) What is the price of a town house with a lot size of 1.3, living area of 1800, and is 7 years old? EBBBBE A> >}>l> >{