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[answered] A psychologist studied the number of words spoken by a samp


A psychologist studied the number of words spoken by a sample of 8 three-year-olds. The numbers of words recorded per each 3-year-old were 28, 19, 30, 22, 54, 36, 48, and 19.

(a) State the mode (if one exists. If not, indicate "none").


(b) Find the median. Show work/explanation.


(c) State the mean. Show work/explanation.


(d) The sample standard deviation is 13.17. What percentage of the data fall within one standard deviation of the mean? Show work/explanation.

A. 34%

B. 68%

C. 75% ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? d._________

D. 88%

 


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