The following table shows a sample of the amount spent for lunch by 8 students Lunch Spending ($) = x; 28 10 1 15 8 6 10 6 4. What is the median of this sample?

Use the formula to compute E(x).

Let Var(X) = 25 and Z= 2X + 5 Compute Var (Z)

What are the three specific desirable characteristics of an estimator?

where did you get 0.1235 from??

WHat are the graphs for both?

Only typed answer and please don't use chatgpt otherwise I downvote the answer  Assume that the relationship between test scores and the student-teacher ratio can be modeled as a linear function with an intercept of 698.9 and a slope of (-2.28). A decrease in the student teacher ratio by 2 will:   A) reduce test scores by 2.28 on average   B) result in a test score of 698.9   C) reduce test scores by 2.56 on average   D) reduce test scores by 4.56 for every school district   PLEASE EXPLAIN WHY C IS CORRECT.

The Health Fare Cereal Company makes three cereals using wheat, oats, and raisins. The proportions of each cereal follow. Proportion of Each Pound of Cereal Cereal Wheat Oats Raisins Lite 0.75 0.25 Trim 0.50 0.25 0.25 Health Fare 0.25 0.50 0.25 Use matrix multiplication to determine the number of pounds of wheat, oats, and raisins needed to fill an order of 1440 pounds of Lite, 2000 pounds of Trim, and 2040 pounds of Health Fare. wheat Ibs oats Ibs raisins X Ibs

The revenue (in dollars) from the sale of x car seats for infants is given by the following function. R(x)=64x-0.020x² 0≤x≤3200 (A) Find the average change in revenue if production is changed from 1,000 car seats to 1,050 car seats. (B) Use the four-step process to find R'(x). (C) Find the revenue and the instantaneous rate of change of revenue at a production level of 1,000 car seats, and interpret the results. ... (A) Find the average change in revenue if production is changed from 1,000 car seats to 1,050 car seats. 23 (Round to one decimal place as needed.) (B) R'(x) =

Scott Bell Builders would like to predict the total number of labor hours spent framing a house (Y) based on the square footage of the house (X). The following data have been compiled on 7 houses recently built. Use Excel - Blank.xlsx Number of labor hours (Y) 258 189 242 177 151 226 184 type the numbers as shown below. Square footage in 100s (X) 29 27 32 35 18 30 36 Calculate the intercept (or b0). Round up to 4 decimal places.