Problem: The number of dogs per household in a small town.

Statistics
Tutor: None Selected Time limit: 1 Day

Problem: BASEBALL: The number of games played in the World Series from 1903 to 2009.

Games Played    4       5     6      7     8

Frequency         20      23   23    36   3

(a) Use the frequency distribution to construct a probability distribution.
(b) Graph the probability distribution using a histogram and describe its shape.
(c) Find the mean, variance, and standard deviation of the probability distribution.
(d) Interpret the results in the context of the real life situation.

Mar 25th, 2015


Frequency Distribution 

xp(x)xpx^2*p
420/10580/105320/105
523/105115/105575/105
623/105138/105828/105
736/105252/1051764/105
83/10524/105192/105


∑xp = 609/105 = 5.8
∑x^2p=3679/105=35.03






Mean = 5.8

Variance = 35.03 - (5.8)^2 = 35.03 - 33.64 = 1.39

S.D = square root of  1.39 = 1.17



Mar 25th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Mar 25th, 2015
...
Mar 25th, 2015
Mar 30th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer