A2004 gallup survey interviewed a nationally representative random sample of 560 teenagers aged 13 to 17; 60 acknowledged having smoked in the past week. (a) what parameter are we interested in? n, the number of teenagers in the sample p, the proportion of the u. s. population who are aged 13 to 17 p, the proportion of teenagers aged 13 to 17 who acknowledge having smoked in the week before their interview n, the number of people who smoke correct: your answer is correct. (b) give the numerical value of the point estimate for this parameter. 0.107 correct: your answer is correct. (use 3 decimal places) (c) calculate a 95% confidence interval for the parameter. (.0814 correct: your answer is correct. , .133 correct: your answer is correct. ) (use 3 decimal places)

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?