A researcher studying reaction time of drivers states that, A 95% confidence interval for the time it takes for a driyer to apply the brakes after seeing the brake lights on a vehicle in front of h 1.2.to 1.8 seconds."/Which of the foll owing claims is justified? A reporter claims that any randomly selected driver will take at least 1.2 seconds to mean A. apply the brakes after seeing the brake lights on a vehicle in front of him. b. A reporter claims that the mean amount of time it takes to apply the brakes after seeing the brake lights on a vehicle in front of him is at least 1.2 seconds. A reporter claims that it takes at least 2 seconds to apply the brakes after seeing the brake lights on a vehicle in front of him. d. A reporter claims that it takes 1.2 or 1.8 seconds to apply the brakes after seeing the brake lights on a vehicle in front of him. A reporter claims that it takes at least 1.5 seconds to apply the brakes after seeing the brake lights on a vehicle in front of him. a. 10-1: 2.5 pts C. e. What is the aritical value * for a 99% confidence interval when n = 20? a. 2.086 b. 2.093 2.576 C. d. 2.845 2.861 e. The weights of 9 men have mean x = 175 pounds and standard deviation s = 15 pounds. What is the standard error of the mean? 58.3 b. C. 15 d. 1.67 e. 1.29 Other things being equal, the margin of error of a confidence interval increases as the sample size increases. b. sample mean increases. confidence level increases. d. confidence level decreases. none of the above. a. C. e. An SRS of 100 postal employees found that the average time these employees had worked for the postal service was x 7 years with standard deviation s 2 years. Assume the distributi on of the time the population of employees have worked for the postal service is approximately Normal. Which of the following gives the correct 95% confidence interval for the mean time u the population of postal service employees have worked for the postal service? a. 7 2 b. 7 1.984 c. 7 0.525 d. 7 0.4 e. 7 0.2
A researcher studying reaction time of drivers states that, A 95% confidence interval for the time it takes for a driyer to apply the brakes after seeing the brake lights on a vehicle in front of h 1.2.to 1.8 seconds."/Which of the foll owing claims is justified? A reporter claims that any randomly selected driver will take at least 1.2 seconds to mean A. apply the brakes after seeing the brake lights on a vehicle in front of him. b. A reporter claims that the mean amount of time it takes to apply the brakes after seeing the brake lights on a vehicle in front of him is at least 1.2 seconds. A reporter claims that it takes at least 2 seconds to apply the brakes after seeing the brake lights on a vehicle in front of him. d. A reporter claims that it takes 1.2 or 1.8 seconds to apply the brakes after seeing the brake lights on a vehicle in front of him. A reporter claims that it takes at least 1.5 seconds to apply the brakes after seeing the brake lights on a vehicle in front of him. a. 10-1: 2.5 pts C. e. What is the aritical value * for a 99% confidence interval when n = 20? a. 2.086 b. 2.093 2.576 C. d. 2.845 2.861 e. The weights of 9 men have mean x = 175 pounds and standard deviation s = 15 pounds. What is the standard error of the mean? 58.3 b. C. 15 d. 1.67 e. 1.29 Other things being equal, the margin of error of a confidence interval increases as the sample size increases. b. sample mean increases. confidence level increases. d. confidence level decreases. none of the above. a. C. e. An SRS of 100 postal employees found that the average time these employees had worked for the postal service was x 7 years with standard deviation s 2 years. Assume the distributi on of the time the population of employees have worked for the postal service is approximately Normal. Which of the following gives the correct 95% confidence interval for the mean time u the population of postal service employees have worked for the postal service? a. 7 2 b. 7 1.984 c. 7 0.525 d. 7 0.4 e. 7 0.2
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:A researcher studying reaction time of drivers states that, A 95% confidence interval for the
time it takes for a driyer to apply the brakes after seeing the brake lights on a vehicle in front of h
1.2.to 1.8 seconds."/Which of the foll owing claims is justified?
A reporter claims that any randomly selected driver will take at least 1.2 seconds to
mean
A.
apply the brakes after seeing the brake lights on a vehicle in front of him.
b. A reporter claims that the mean amount of time it takes to apply the brakes after seeing
the brake lights on a vehicle in front of him is at least 1.2 seconds.
A reporter claims that it takes at least 2 seconds to apply the brakes after seeing the brake
lights on a vehicle in front of him.
d. A reporter claims that it takes 1.2 or 1.8 seconds to apply the brakes after seeing the
brake lights on a vehicle in front of him.
A reporter claims that it takes at least 1.5 seconds to apply the brakes after seeing the
brake lights on a vehicle in front of him.
a.
10-1: 2.5 pts
C.
e.
What is the aritical value * for a 99% confidence interval when n = 20?
a.
2.086
b. 2.093
2.576
C.
d. 2.845
2.861
e.
The weights of 9 men have mean x = 175 pounds and standard deviation s = 15 pounds. What is the
standard error of the mean?
58.3
b.
C.
15
d. 1.67
e. 1.29
Other things being equal, the margin of error of a confidence interval increases as the
sample size increases.
b. sample mean increases.
confidence level increases.
d. confidence level decreases.
none of the above.
a.
C.
e.
An SRS of 100 postal employees found that the average time these employees had worked for the
postal service was x 7 years with standard deviation s 2 years. Assume the distributi on of the time
the population of employees have worked for the postal service is approximately Normal. Which of
the following gives the correct 95% confidence interval for the mean time u the population of postal
service employees have worked for the postal service?
a. 7 2
b. 7 1.984
c. 7 0.525
d. 7 0.4
e. 7 0.2
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