document.write( "Question 1154314: Consider a binomial experiment with n=6 trials where the probability of success on a single trial is p=0.85. (a) Find P(r=7). (b) Interpretation If you conducted the experiment and got fewer than 2 successes, would you be surprised? Why? \n" ); document.write( "

Algebra.Com's Answer #776752 by Edwin McCravy(20060) $\"\"$ $\"About$

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Consider a binomial experiment with n=6 trials where the probability of success
\n" ); document.write( "on a single trial is p=0.85.
\n" ); document.write( "(a) Find P(r=7).
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document.write( "Either use a TI-83 or 84 graphing calculator or the long formula.\r\n" );
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document.write( "If you use a TI graphing calculator:\r\n" );
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document.write( "press 2nd vars and scroll down to highlight binompdf(  [not binomcdf]\r\n" );
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document.write( "[if your calculator is newer then trials:6, p:0.85, x value:7, paste, enter]\r\n" );
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document.write( "press enter    \r\n" );
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document.write( "Answer: 0\r\n" );
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document.write( "Why is it 0?  Because it is impossible to get 7 successes out of only 6 trials!\r\n" );
document.write( "(Bet you already knew that, right?  lol)\r\n" );
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(b) Interpretation If you conducted the experiment and got fewer than 2 successes, would you be surprised?

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document.write( "\"Fewer than 2\" must be interpreted as \"1 or fewer\"\r\n" );
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document.write( "press 2nd vars and scroll down to highlight binomcdf( [not binompdf this time]\r\n" );
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document.write( "press enter    \r\n" );
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document.write( "[if your calculator is newer then trials:6, p:0.85, x value:1 paste, enter]\r\n" );
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document.write( "press enter \r\n" );
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document.write( "Answer: 3.8728125E-4 = 0.00038728125\r\n" );
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document.write( "Yes we would be surprised because that probability is less than 0.05.  We should\r\n" );
document.write( "be surprised at anything happening that happens less than 5% of the time.  \r\n" );
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document.write( "Edwin

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