Asked by WIlbert
How need help with this one. This is what I know
P(X)<115)= 12.1
(115-mean) how do I get the mean or is their a formula that can help me solve this?
A population of line voltages has a standard deviation of 1.20 volts. What value would the mean line voltage have to be so that 12.1% of the line voltages fell below 115V?
P(X)<115)= 12.1
(115-mean) how do I get the mean or is their a formula that can help me solve this?
A population of line voltages has a standard deviation of 1.20 volts. What value would the mean line voltage have to be so that 12.1% of the line voltages fell below 115V?
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