Download In class practice test The 70 highest dams in the world have an

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
Document related concepts
no text concepts found
Transcript 
In class practice test
The 70 highest dams in the world have an average height of 206 meters with a standard deviation of 35 meters. The
Hoover and Grand Coulee dams have heights of 221 and 168 meters respectively. The Russian dams, the Nurek and
Charvak have heights with z-scores of +2.69 and -1.13 respectively. List the dams in order of ascending size.
Suppose the annual production of milk, per milk cow, has a normal distribution with a mean amount 11,200 pounds and
a standard deviation of 280 pounds. Suppose these cows are Jerseys. Two farmers are having a friendly argument about
which breed is better. Suppose Holsteins have a mean amount of 18,562 pounds with a standard deviation 323 pounds.
The Jersey farmer has a cow that is producing an average of 15,300 pounds and the Holstein farmer has a cow averaging
22,000 pounds.
Which cow is out producing the breed average, relatively speaking?.
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
1) Describe any similarities or differences in the two distributions represented by the
1) _____________
following boxplots. Assume the two boxplots have the same scale.
2) Describe any similarities or differences in the two distributions represented by the
following boxplots. Assume the two boxplots have the same scale.
2) _____________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
3) Suppose that all the values in a data set are converted to z-scores. Which of the statements
below is true?
A: The mean of the z-scores will be zero, and the standard deviation of the z-scores will be the
same as the standard deviation of the original data values.
B: The mean and standard deviation of the z-scores will be the same as the mean and standard
deviation of the original data values.
C: The mean of the z-scores will be 0, and the standard deviation of the z-scores will be 1.
D: The mean and the standard deviation of the z-scores will both be zero.
A) C
B) B
C) A
D) D
3) _______
Related documents