> = Sec. 10.2 Question 14 of 15 (1 point) | Question Attempt: 2 of 3 3 ✓ 4 ✓ 5 ✓ 6 ✓ 7 ✓ 8 ✓ 9 ✓ 10 11 ✓12 13 14 A researcher hopes to determine whether the number of hours a person jogs per week is related to the person's age. Age, x 34 22 48 56 Hours, y 3.5 7 2.5 2 62 1 r≈ 0.951 Part: 0/3 Part 1 of 3 Find the equation of the regression line and draw the line on the scatter plot, but only if r is significant. Round the slope and y-intercept to four decimal places, if necessary. (Choose one) significant at the 5% level. The equation of the regression line is y = X G B

For each of the variables described below, indicate whether it is a quantitative or a categorical (qualitative) variable. Also, indicate the level of measurement for the variable: nominal, ordinal, interval, or ratio. Make sure your responses are the most specific possible.   Variable Type of variable Level of measurement (a)Duration (in minutes) of a call to a customer support line Quantitative Categorical Nominal Ordinal Interval Ratio (b)Exchange on which a stock is traded (NYSE, AMEX, or other) Quantitative Categorical Nominal Ordinal Interval Ratio (c)Temperature (in degrees Celsius) Quantitative Categorical Nominal Ordinal Interval Ratio

my Welcome - LookingGlass × WA HW (6.5) X WA HW (6.5) - Math 1220GS X 6-5.pdf 10 webassign.net/web/Student/Assignment-Responses/submit?dep=34562730&tags=autosave #question1848913_1 2. [0/3 Points] DETAILS MY NOTES STITZCA3 6.5.028.CAP. The half-life of the radioactive isotope Carbon-14 is about 5730 years. Part (a) - Find N in terms of t. The amount of a radioactive element A at time t is given by the formula A(t) = Aoekt, + BC Relaunch to update: PREVIOUS ANSWERS ASK YOUR TEACHER PRACTICE ANOTHER where A is the initial amount of the element and k < 0 is the constant of proportionality which satisfies the equation (instantaneous rate of change A(t) at time t) = KA(t). Use the formula given above to express the amount of Carbon-14 left from an initial N milligrams as a function of time t in years. (Round k to six decimal places.) A(t) = 2.718280 mg Part (b) Find the percentage remaining. What percentage of the original amount of Carbon-14 is left after 10,000 years? (Round to the…

A car traveling along a straight road is clocked at a number of points. The data from the observations are given in the following table, where the time is in seconds, the distance is in feet. Use appropriate 3-point formula and data to approximate the speed at time t=0, 3, 5, and 13. Time Distance 3 225 5 383 8 623 10 742 13 993