4.Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use web-calculator to answer the following questions. Instead, you need to use the Z distribution table in Appendix A in Jackson’s book.
d.There are 200 students in a sample. How many of these students will have scores that fall under the score of 41?
What?? - Writeacher, Tuesday, November 29, 2011 at 6:46am
If you really want an expert to help you, be sure to follow directions and type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.
Also ... please note that no one here will do your work for you. However, we will be happy to read over what YOU THINK and make suggestions and/or corrections.
Please post what you think.
university of phoenix - Reiny, Tuesday, November 29, 2011 at 8:28am
The z-score for your 41 is
(41-45)/4 = -1
so use your chart to find the decimal for a standard deviation of -1 (should be .159 depending on the accuracy of your chart)
multiply that by 200