A TV weatherman’s end-of-year analysis of the local weather showed that among all the years for which re-cords had been kept, the past year’s average temperature had a z-score of 2.8. What does that mean?A) The past year’s average temperature was 2.8° higherthan the historical mean.B) The past year’s average temperature was 2.8 standarddeviations above the historical mean.C) The past year’s average temperature was 2.8% higherthan the historical mean.D) The past year’s temperatures had a standard deviationof 2.8°.E) The past year had 2.8 times as many days with aboveaverage temperatures as is typical for that area.
A TV weatherman’s end-of-year analysis of the local weather showed that among all the years for which re-cords had been kept, the past year’s average temperature had a z-score of 2.8. What does that mean?A) The past year’s average temperature was 2.8° higherthan the historical mean.B) The past year’s average temperature was 2.8 standarddeviations above the historical mean.C) The past year’s average temperature was 2.8% higherthan the historical mean.D) The past year’s temperatures had a standard deviationof 2.8°.E) The past year had 2.8 times as many days with aboveaverage temperatures as is typical for that area.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 30PPS
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A TV weatherman’s end-of-year analysis of the local
weather showed that among all the years for which re-
cords had been kept, the past year’s average temperature
cords had been kept, the past year’s average temperature
had a z-score of 2.8. What does that mean?
A) The past year’s average temperature was 2.8° higher
than the historical mean.
B) The past year’s average temperature was 2.8 standard
deviations above the historical mean.
C) The past year’s average temperature was 2.8% higher
than the historical mean.
D) The past year’s temperatures had a standard deviation
of 2.8°.
E) The past year had 2.8 times as many days with above
average temperatures as is typical for that area.
A) The past year’s average temperature was 2.8° higher
than the historical mean.
B) The past year’s average temperature was 2.8 standard
deviations above the historical mean.
C) The past year’s average temperature was 2.8% higher
than the historical mean.
D) The past year’s temperatures had a standard deviation
of 2.8°.
E) The past year had 2.8 times as many days with above
average temperatures as is typical for that area.
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