Sunday

February 1, 2015

February 1, 2015

Posted by **Jim** on Tuesday, April 12, 2011 at 10:27pm.

- statistics -
**MathGuru**, Thursday, April 14, 2011 at 6:31pmUse the normal approximation to the binomial distribution.

First find mean and standard deviation.

mean = np = (600)(.21) = ?

standard deviation = √npq = √(600)(.21)(.79) = ?

Note: q = 1 - p

I'll let you finish the calculations.

Next take .24 times 600. Use that value for x in the z-score equation:

z = (x - mean)/sd

Once you calculate the z-score, look at a z-table to determine the probability. Remember that the problem is asking "more than" when you check the table.

I hope this will help get you started.

- statistics -
**sean**, Monday, November 12, 2012 at 7:57pm0.983

**Answer this Question**

**Related Questions**

statistics - In a random sample of 100 customers, 62 returned with a month. For ...

Math - Binomial problems: Basic Anita's, a fast-food chain specializing in hot ...

statistics - Suppose that 98% of your customers in your market have internet ...

Statistics - Service times for customers at a post office follow some right-...

statistics - According to a survey, only 15% of customers who visited the web ...

Statistics - In his management information systems textbook,Professor David ...

AP STATISTICS - Mens shirt sizes are determined by neck sizes. suppose the mens ...

statistics - . In his management information systems textbook, Professor David ...

Math - A real estate salesperson bought promotional calendars and date books to ...

math - A real estate salesperson bought promotional calendars and date books to ...