Reply With Quotewhat have you attempted so far?
in a dsitribution of 400 values the mean is 40 and teh standard dev. is 9.
a. at least waht percentae of data values will fall bewteen 13 and 67?
In what mosy what percentage of date values will be less than 22 or more than 58?
The average score in a special test of knowlegde of wood refinsihing has a mean of 53 and a standard dev. of 6. What is the range of values in which at least 84% of the scores will lie.
what have you attempted so far?
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