SOLUTION: 1. A local police department attempted to estimate the average rate of speed (μ) of vehicles along a strip of Main Street. With hidden radar, the speed of a random selection
Algebra.Com
Question 727215: 1. A local police department attempted to estimate the average rate of speed (μ) of vehicles along a strip of Main Street. With hidden radar, the speed of a random selection of 25 vehicles was measured, which yielded a sample mean of 42 mph and a standard deviation of 6 mph.
a. Estimate the standard error of the mean.
b. Find the 95% confidence interval for the population mean
2. To determine the views of students at a particular college about campus security, an 11-point attitude scale was administered to a random sample of 40 students. This survey yielded a sample mean of 6 (the higher the score, the higher the perceived effectiveness of security measures) and a standard deviation of 1.5.
a. Estimate the standard error of the mean.
b. Find the 95% confidence interval for the population mean.
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
RELATED QUESTIONS
A car takes 1 hour to travel 100 km along a main road and then 1/2 hour to travel 20 km... (answered by ikleyn)
a car takes 1 hour to travel 100 km along a main road and then 1/2 hour to travel 20 km... (answered by Alan3354)
2. Ram is speeding along a highway when he sees a police motorbike parked on
the side of (answered by Alan3354)
In an experiment, researchers tested 40 adults (group A), and 40 children (group C) to... (answered by beto20da,jim_thompson5910)
Ram is speeding along a highway when he sees a police motorbike parked on the side of the (answered by advanced_Learner)
Ram is speeding along a highway when he sees a police motorbike parked on the side of... (answered by ankor@dixie-net.com)
A train travelling at an average speed of 53 km per hour. At this rate of speed, the... (answered by Alan3354)
Of the vehicles stopped by police 1/3 were station wagons 1/4 were sport cars and 1/5... (answered by josmiceli)
Finding the rate of change
I have a graph of "New Vehicle Sales"
in 2005 17,445... (answered by stanbon)