The speed limit on U.S. highways is 65 mph. If metric speed limit signs are posted km, what will they read? Round to the nearest whole number.
The speed limit on U.S. highways is 65 mph. If metric speed limit signs are posted...
The current speed limit on certain highways in the United States is 65 mph. What is the speed limit in km/s?ys in the United States is 65 mph. What is the speed limit in km/s?
A section of U.S. highway with a posted speed limit of 70.0 mph (113 kph) has a curve of radius 1,170 ft (357 m). At what angle should the curve be banked so that cars travelling at the speed limit have no tendency to skid sideways? Bank angle: ______________° What if the road were on Mars? (Martian surface gravity is 3.71 m/s².) Assume the same coefficient of friction for a dusty road on Mars as for a wet road on...
Do drivers follow the posted speed limit of 65 mph on Interstate 270? The following data give the speeds (mph), as measured by radar, of 10 randomly selected cars traveling on Interstate 270: 76 72 80 68 76 74 71 78 82 64 Assume all conditions are met for confidence intervals. Find a 99% confidence interval for the population mean speed of all drivers on I-270. [3] Find a 95% confidence interval for the population mean speed of...
1.If we changed our speed limit signs to metric, what would probably replace the following? (Enter your answers to the nearest km/h.) (a) 15 mi/h km/h (b) 80 mi/h km/h 2.A quantity of water is poured into a graduated cylinder, which then reads 154 mL. What is the mass of the water in kilograms?
The speed limit on the New York State Thruway is 65 m.p.h, exactly. Considering that 1.00 mi. = 1.61 km, what would the speed limit be in k.p.h. if the United States were to convert to the metric system. Show your work and express your answer to the proper number of significant figures.
2. Data was collected from a highway with a 65 mph speed limit. A speed “gun” sampled 12 random vehicles and found the mean to be 60.67 mph with a standard deviation of 4.08 mph. i. Which model would be used to construct a confidence interval for the mean 2i) speed of all vehicles on that highway? a) students-t b) least squares linear regression c) Binomial d) Normal ii. The standard deviation for this sampling distribution would be calculated using,...
1. The speed limit on some interstate highways is roughly 100 km/h. (a) What is this in meters per second? (b) How many miles per hour is this?
Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system. The following is a frequency distribution of speeds. Speed (miles per hour) Frequency 45 up to 55 50 55 up to 65 325 65 up to 75 275 75 up to 85 25 The standard deviation of this distribution is the closest to ____. 5.35 6.81 9.54 10.25
Consider the following table summarizing the speed limit of a certain road and the number of accidents occurring on that road in January. Posted Speed Limit 57 48 40 38 21 23 Reported Number of Accidents 28 25 21 17 18 11 1) Find the slope of the regression line predicting the number of accidents from the posted speed limit. Round to 3 decimal places. 2) Find the intercept of the regression line predicting the number of accidents from the...
Consider the following table summarizing the speed limit of a certain road and Tpe mumbersin the boses, the number of accidents occurring on that road in January. ツPart 1: 10 points g7 Part 2: 10 points Posted Speed Limit 55 45 42 38 2o 24 Part 3: 1 points 21 points Reported Number of Accidents 27 29 25 17 19 13 1) Find the slope of the regression line predieting the number of accidents from the posted speed limit. Round...