Homework Answers
New mean will be 4+ previous mean
= 4 + 70.5
= 74.5
option 1) is correct
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Question 8 (1 point Suppose that a police officer measured the speed of cars on a...
4) 282 5) 70.5 Question 9 (1 point) Total enrollment in the Kalamazoo Public Schools have...
4) 282 5) 70.5 Question 9 (1 point) Total enrollment in the Kalamazoo Public Schools have a mean and standard deviation of 11,485.2 and 19.2, respectively. The district expects growth in the next five years, so every observation in the dataset is multiplied by 1.2. What will the new mean be? 1) 11,485.2 2) 11,486.4 3) 1.2 4) 9,571 5) 13,782.24 Suppose that the average and standard deviation of the tine for speeding on a particular highway are 111.12 and...
5) 13,472.52 Question 7 (1 point) The temperature in Grand Haven in August (fahrenheit) for 10...
5) 13,472.52 Question 7 (1 point) The temperature in Grand Haven in August (fahrenheit) for 10 days was 768:791:86.2 69.7 73.4; 77.5; 774; 80.2; 83.3, 88.2. Calculate the coefficient of variation of the dataset. 1) 444.472 2) -73.567 3) 11.227 4) 84.793 5) 0.071 average speed of the cars was 70.5 and the standard devilation was 4.86. However, since th radar gun was biased. 4 is added to every observation in the dataset. What will the new mean Question 8...
A radar gun used by a police officer measures your speed at a certain instant in...
A radar gun used by a police officer measures your speed at a
certain instant in time, whereas an officer in a plane measures the
time it takes for you to travel the known distance between two
stripes painted on the highway.
What is the difference in nature between these two types of
measurement and which is the fairer basis for issuing a speeding
ticket?
Would your answer change if one stripe occurred before a rest
area and the other...
(1 point) Traffic police monitor the speed of vehicles as they travel over a new bridge....
(1 point) Traffic police monitor the speed of vehicles as they travel over a new bridge. The average speed for a sample of 41 vehicles was 81.35 kmvh, with the sample standard deviation being 4.52 km/h. We will assume that the speeds are Normally distributed, and the police are interested in the mean speed. Part a) Since the variance of the underlying Normal distribution is not known, inference here would involve the distrbution. How many degrees of freedom would the...
4) 282 5) 70.5 Question 9 (1 point) Total enrollment in the Kalamazoo Public Schools have a mean and standard deviation of 11,485.2 and 19.2, respectively. The district expects growth in the next five years, so every observation in the dataset is multiplied by 1.2. What will the new mean be? 1) 11,485.2 2) 11,486.4 3) 1.2 4) 9,571 5) 13,782.24 Suppose that the average and standard deviation of the tine for speeding on a particular highway are 111.12 and...
5) 13,472.52 Question 7 (1 point) The temperature in Grand Haven in August (fahrenheit) for 10 days was 768:791:86.2 69.7 73.4; 77.5; 774; 80.2; 83.3, 88.2. Calculate the coefficient of variation of the dataset. 1) 444.472 2) -73.567 3) 11.227 4) 84.793 5) 0.071 average speed of the cars was 70.5 and the standard devilation was 4.86. However, since th radar gun was biased. 4 is added to every observation in the dataset. What will the new mean Question 8...
A radar gun used by a police officer measures your speed at a
certain instant in time, whereas an officer in a plane measures the
time it takes for you to travel the known distance between two
stripes painted on the highway.
What is the difference in nature between these two types of
measurement and which is the fairer basis for issuing a speeding
ticket?
Would your answer change if one stripe occurred before a rest
area and the other...
(1 point) Traffic police monitor the speed of vehicles as they travel over a new bridge. The average speed for a sample of 41 vehicles was 81.35 kmvh, with the sample standard deviation being 4.52 km/h. We will assume that the speeds are Normally distributed, and the police are interested in the mean speed. Part a) Since the variance of the underlying Normal distribution is not known, inference here would involve the distrbution. How many degrees of freedom would the...
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