Interpret the least squares regression line of this data set.The manager of a ski resort in the Alps always worries there won't be enough snow to keep the resort open into the spring. She decided to see if there was a relationship between the temperature in January and the amount of snow in the spring.For several years, she recorded the average temperature in January (in Celsius), x. On March 1, she also measured the depth of the snow at the bottom of a particular ski slope (in centimeters), y.Average temperature (in Celsius) Snow depth (in centimeters)–3 68–1 670 471 573 415 36The least squares regression line for the data set is:y=–4.269x+56.224Use it to complete the following sentence:If the average temperature in January were one degree higher, the least squares regression line predicts there would be fewer centimeters of snow on March 1st.

Read the following description of a data set.Ariel is an ornithologist who monitors the wintering activity of birds in a forest clearing. She thinks that the number of different species arriving each season is related to the average winter temperature.For several winters, Ariel takes precise measurements to compute the average winter temperature (in Celsius), x. She also counts the total number of bird species, y, that appeared in the clearing.The least squares regression line of this data set is:y=0.403x–0.726If the average winter temperature is 22, what does this line predict for the number of bird species appearing?Round your answer to the nearest integer. bird species

Read the following description of a data set.For a science project, Sue wants to see if a larger body of water has more heat energy than a smaller body of water at the same temperature. She prepared a number of buckets filled with various amounts of water at a fixed temperature and dropped an ice cube of the same size into each one.Sue then recorded the volume of water in each bucket (in milliliters), x, and the amount of time it took for each ice cube to melt (in minutes), y.The least squares regression line of this data set is:y=–0.025x+39.998How much time does this line predict it takes for the ice cube to melt in 738 milliliters of water at the fixed temperature?Round your answer to the nearest thousandth. minutesSubmit

Read the following description of a data set.Nate is packing for vacation and is wondering how many books to bring. He wants to make sure he does not run out of reading material, so he looks at his reading journal to see how many books he read on past vacations.For each vacation, he records the vacation's length (in days), x, and how many books he read, y.The least squares regression line of this data set is:y=0.745x–0.044How many books does this line predict Nate would have read on a 13 day vacation?Round your answer to the nearest integer. booksSubmit

Read the following description of a data set.Nick accidentally left food in his backyard one night and noticed a cat eating it the next morning. Nick likes helping out the neighborhood cats, so he wonders if putting out more food will result in more cats coming to his backyard.Over the next few nights, Nick leaves out different amounts of food (in grams), x, and notes the number of cats in his backyard the following morning, y.The least squares regression line of this data set is:y=0.004x–0.358Complete the following sentence:If Nick leaves out one additional gram of food at night, the least squares regression line predicts more cats will be in his backyard the next morning.

Mekhi is studying the trend of the world's average temperature over time. He collects data about the world's average temperature between the years   and   (a total of   years). Here is computer output from a least-squares regression analysis on his sample (years are counted as number of years since  ):Predictor Coef SE Coef T PConstant     Year       Assume that all conditions for inference have been met.Which of these is a   confidence interval for the slope of the least squares regression line?Choose 1 answer:Choose 1 answer:(Choice A)    A  (Choice B)    B  (Choice C, Checked)    C (Choice D)    D (Choice E)    E Report a problemDo 4 problemsSkipCheck