document.write( "Question 1206637: Consider a binomial random variable with n = 7 and p = 0.8. Let x be the number of successes in the sample. Evaluate the probability. (Round your answer to three decimal places.)
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Algebra.Com's Answer #844187 by ikleyn(52797)\"\" \"About 
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\n" ); document.write( "Consider a binomial random variable with n = 7 and p = 0.8.
\n" ); document.write( "Let x be the number of successes in the sample. Evaluate the probability.
\n" ); document.write( "(Round your answer to three decimal places.)
\n" ); document.write( "P(x = 3)
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document.write( "Use the standard formula for the binomial distribution probability,\r\n" );
document.write( "which you should know from your textbook, since it is a pre-requisite\r\n" );
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document.write( "    P = \"C%5B7%5D%5E3%2A0.8%5E3%2A%281-0.8%29%5E%287-3%29\" = \"%28%287%2A6%2A5%29%2F%281%2A2%2A3%29%29%2A0.8%5E3%2A0.2%5E4\" = 0.028672.\r\n" );
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document.write( "ANSWER.  P = 0.029, rounded as requested.\r\n" );
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document.write( "Alternatively, you can use a regular calculator TI-83/84, with its standard function binompdf.\r\n" );
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document.write( "To learn about it and HOW TO, read from this source\r\n" );
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document.write( "https://www.sayvilleschools.org/site/handlers/filedownload.ashx?moduleinstanceid=3050&dataid=12830&FileName=calc%20directions.pdf\r\n" );
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document.write( "Alternatively, you can use Excel standard function BINOM.DIST\r\n" );
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document.write( "About this function, its format and parameters/arguments, read from this source \r\n" );
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document.write( "https://support.microsoft.com/en-us/office/binom-dist-function-c5ae37b6-f39c-4be2-94c2-509a1480770c\r\n" );
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document.write( "Alternatively, you can use free of charge online calculator \r\n" );
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document.write( "https://stattrek.com/online-calculator/binomial.aspx\r\n" );
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document.write( "which, in my opinion, is the best tool for such calculations/exercises.\r\n" );
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