An electronics retailer would like to investigate the relationship between the selling price of a digital camera and the demand for it. The table shown below gives the weekly demand for the camera in one particular market along with the corresponding price. These data have a sample correlation coefficient, rounded to three decimal places, of -0.852. Using a = 0.01, test if the population correlation coefficient between the selling price and the demand for the camera is less than zero. What conclusions can you draw? D Demand Price 15 $330 OA. Ho ps0 H₁ p>0 What are the correct null and alternative hypotheses? OC. Ho p=0 H₁: p#0 18 $340 15 $350 What is the test statistic? t=(Round to two decimal places as needed.) What is the p-value? Ho There 11 $360 p-value = (Round to three decimal places as needed.) State the conclusion. 4 7 $370 enough evidence from the sample to conclude that p is. OB. Ho p#0 H₁: p=0 OD. Ho: p20 H1-p<0 zero.

Define the term relationship as a perfect positive cross-correlation?

Suppose that you are interested in the relationship between Reading and Writing scores. (a)  Provide the scatterplot for the association between Reading and Writing scores. Based on the scatterplot, do you expect Reading to be correlated with Writing? If so, based only on the plot, would you expect the correlation to be positive or negative? Explain your answer. (b)  Report the value of the correlation between Reading and Writing scores, and whether it is statistically significant. Do these results agree with your expectations from part (a)? RDG WRTG 34 44 47 36 42 59 39 41 36 49 50 46 63 65 44 52 47 41 44 50 50 62 44 41 47 40 42 59 42 41 47 41 60 65 39 49 57 54 73 65 47 46 39 44 35 39 39 41 48 49 31 41 52 63 47 54 36 44 47 44 34 46 52 57 42 40 37 44 44 33 71 58 47 46 42 33 42 36 47 41 52 54 52 54 39 39 31 41 60 54 47 31 39 28 42 36 47 57 42 49 36 41 50 33 34 34 55 55 28 46…

Below is a table showing the relationship between age and bone density of a typical healthy adult male.   Age (years)   25 35 45 55 65 75 85 Bone density (mg/cm²) 1165 1135 1085 1060 1015 975 910     Using your line of best fit find the equation for this line. Describe the correlation between the two variables and what conclusions can you make from this set of data?   Using graph plotted extrapolate to find the bone density of a 90 years old typical adult.