The following table shows the hot dogs bought from a street vendor over the course of eight days ("Demand"). Also shown is the temperature for each day in degrees Celsius. Complete parts a and b below. Temperature (°C) 22 13 Demand 20 5 16 13 21 16 21 O 41 31 47 30 38 22 35 a. Calculate the slope and y-intercept for the linear regression equation for these data. ŷ=+x (Round to two decimal places as needed.) b. Predict the demand for hot dogs on a day with a temperature of 7°C. The predicted demand for hot dogs on a day with a temperature of 7°C is (Round to the nearest integer as needed.) affo

The table shows the approximate chirping rate at various temperatures for one type of cricket. Use the linear regression feature on a graphing calculator to determine an equation of the line that best fits the data. Round to the hundredths. ⒸEncikAn/Shutterstock.com X Temperature (°F) 50 60 70 80 100 Chirps per Minute 20 80 115 150 250

A set of X and Y scores has SSX = 15, SSY = 24, and SP = 60. The regression equation for these scores will have a slope constant of ______. a. 6 b. 5 c. 3 d. 4

Please show excel formulas if possible. Thanks!

The following table shows the hot dogs bought from a street vendor over the course of eight days ("Demand"). Also shown is the temperature for each day in degrees Celsius. Complete parts a and b below. Temperature (°C) 20 Demand 49 11 23 32 36 19 40 5 17 10 21 16 44 20 D 34 a. Calculate the slope and y-intercept for the linear regression equation for these data. ŷ=+* (Round to two decimal places as needed.)

Please solve what’s not filled in.

Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. Assume that temperature is independent each year. Based on the data shown below, calculate the regression line (each value to two decimal places). First the slope and then the y-intercept. Y X 3 4 5 67 8 00 a 9 y 10.14 10.85 11.86 11.17 7.58 9.79 7.5 x+

Which of the following is true of a linear regression line? a.  Located as close as possible to all the points of a scatter chart. B.  Is defined by an equation having 2 parameters: the slope and the intercept c.  Provides an approximate relationship between the values of two parameters d.  All of the above

The ages (in years) of five men and their systolic pressures. (You can use technology) Age, x 16 25 39 45 49 Systolic blood pressure, y 109 122 143 132 199 a. calculate the correlation coefficient, r b. calculate the critical r c. Is there a significant linear relationship between x and y? d. find the equation of regression line e Interpret the slope and the y-intercept f. Predict the systolic blood pressure for a man who is 40 years old.

Please answer with explanation. I will really upvote