Differentiate - Parameter vs statistic

What does Z-score tell you about someone's score in a class and what does it mean if it is negative or positive?

There is a perception that the wastage is depends upon the level of production. You are required to verify this perception, by performing the regression analysis in the last 12-month data given below. After analysis, answers the given question:                                                    Write down the value of coefficient of correlation and interpret it. Write down the value of coefficient of determination and interpret it. Write down the regression equation for estimating the wastage in the next month Comments about the validity of regression model (equation) How much will be the estimated wastage if the production level is 5,000,000.   Production Wastage 4,341,970 39,048 3,911,307 36,076 4,092,487 36,557 3,983,795 40,748 3,719,102 41,419 4,174,050 38,873 3,904,921 40,764 3,819,264 43,368 3,602,300 40,153 4,152,615 41,479  3,917,154 37,333 3,833,967 37,927

Predicting Percent Body FatThis problem uses the dataset BodyFat, which gives the percent of weight made up of body fat for 100 men as well as other variables such as Age, Weight (in pounds), Height (in inches), and circumference (in cm) measurements for the Neck, Chest, Abdomen, Ankle, Biceps, and Wrist.1Using Neck Circumference to Predict Body FatThe regression line for predicting body fat percent using neck circumference is BodyFat^=-47.9+1.75(Neck). Click here for the dataset associated with this question.   (a) What body fat percent does the line predict for a person with a neck circumference of 35 cm?Round your answer to two decimal places.BodyFat^= %What body fat percent does the line predict for a person with a neck circumference of 40 cm?Round your answer to one decimal place.BodyFat^= %   (b) One of the men in the study had a neck circumference of 38.7 cm and a body fat percent of 11.3. Find the residual for this man.Round your answer to three decimal places.residual= %…