Friday

April 18, 2014

April 18, 2014

Posted by **Courtney** on Friday, November 16, 2007 at 11:10pm.

In Exercise 9 we suggested the model N(1152,84) for weights in pounds of yearling Angus steers. What weight would you consider to be unusually low for such an animal? Explain.

If you are given the model N(1152,84),what are the cutoff values for the middle 40% of the weights?

- AP Statistics -
**PsyDAG**, Saturday, November 17, 2007 at 10:04amI assume that you are talking about a normal distribution with a mean of 1152 and standard deviation of 84.

A Z score is the score in terms of standard deviations (SD), with -2 SD usually being considered low.

Z = (x - )/SD, where x = weight value and = mean. Solve for the unknown, once you find the Z score

The middle 40% is } 20%.

Look up the various Z score values in the table in the back of your statistics booklabeled something like "areas under the normal distribution."

I hope this helps. Thanks for asking.

**Related Questions**

STAT - The weights of the 100 students in an introductory statistics class are ...

STAT - The weights of the 100 students in an introductory statistics class are ...

STAT - The weights of the 100 students in an introductory statistics class are ...

statistics - A shipping company received an order of 1645 packages. The manager ...

Statistics - The average weight of a group of people is 156 pounds and the SD is...

Statistics - Suppose that weights are bell shaped with a mean of 120 pounds and ...

statistics - the weights of shells follow a normal distribution. a random sample...

statistics - The weights of steers in a herd are distributed normally. The ...

statistics - Suppose that the weights of airline passenger bags are normally ...

math - 2. Suppose that peoples weights are normally distributed, with mean 175 ...