What conclusion can be drawn regarding the mean speed of cars traveling through the school zone?Select one:a.We have convincing evidence to conclude that the true mean speed of cars in the school zone is greater than 15.b.We have convincing evidence to conclude that the true mean speed of cars in the school zone is equal to 15.c.We do not have convincing evidence to conclude that the true mean is greater than 15; thus, we should continue to assume that the mean speed is 15. A city is concerned that cars are not obeying school zones by speeding th rough them, puttingchildren at greater risk of injury. The speed limit in school zones is 15 miles per hour. Throughout the courseof one day, a police officer hides his car on a side street that intersects the middle of the school zone andrecords the speed of each car that passes through. The 36 cars that he recorded had an average speed of 16.33mph with a sample standard deviation of 2.54 mph.area=.05area=.025area=.01area=,005t-tail probabilities (df=35)-2.44-2.72-2.03-1.69area=.05+1.69area=.025+2.03area=.01+2.44area=.005t for samplesize n=36+2.72 (df=35)

The sample size is 36, sample mean is 16.33 and the sample standard deviation is 2.54.

Answered: What conclusion can be drawn regarding…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

What conclusion can be drawn regarding the mean speed of cars traveling through the school zone?

Select one:

a.
We have convincing evidence to conclude that the true mean speed of cars in the school zone is greater than 15.

b.
We have convincing evidence to conclude that the true mean speed of cars in the school zone is equal to 15.

c.
We do not have convincing evidence to conclude that the true mean is greater than 15; thus, we should continue to assume that the mean speed is 15.

A city is concerned that cars are not obeying school zones by speeding th rough them, putting
children at greater risk of injury. The speed limit in school zones is 15 miles per hour. Throughout the course
of one day, a police officer hides his car on a side street that intersects the middle of the school zone and
records the speed of each car that passes through. The 36 cars that he recorded had an average speed of 16.33
mph with a sample standard deviation of 2.54 mph.
area=.05
area=.025
area=.01
area=,005
t-tail probabilities (df=35)
-2.44
-2.72
-2.03
-1.69
area=.05
+1.69
area=.025
+2.03
area=.01
+2.44
area=.005
t for sample
size n=36
+2.72 (df=35)

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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