statistics
posted by Brittany .
Children below the 30th percent are in need of special assistance assistance what raw score makes the cut off score for these children?

statistics 
Ms. Sue
What is the highest raw score possible?

statistics 
Ms. Sue
Is that the lowest 30th percentile? Or is it the lowest 30 percent of the total score?

statistics 
Brittany
I guess 100 is the highest the mean is 30.9 and the standard deviation 2.08 it just says children below the 30th percentile

statistics 
PsyDAG
Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.30) and its Z score. (Pay attention to the sign.) Insert Z and other values in equation above to find the cutoff score. 
statistics 
vera
Please adviseThank you.
The Center for Urban Transportation research released a report stating that the average commuting distance in the United States is 10.9 miles Suppose that this average is actually the mean of a sample of 300 commuters and that the sample deviation was 6.2 mi. Estimate the true mean commuting distance using a 99% confidence interval.
Respond to this Question
Similar Questions

math
Reading readiness of preschoolers from an impoverished neighborhood (n = 20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9, with s = 2.08. a.Children below the 30th percentile are … 
Statistics
Suppose we have a population of scores with a mean (ì) of 200 and a standard deviation (ó) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? 
Statistics
Suppose we have a population of scores with a mean (ì) of 200 and a standard deviation (ó) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? 
statistics
Suppose we have a population of scores with a mean (μ) of 200 and a standard deviation (σ) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent … 
stats
Suppose we have a population of scores with a mean (μ) of 200 and a standard deviation (σ) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent … 
math
Reading readiness of preschoolers from an impoverished neighborhood (n=20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9 with SD=2.08. A) Children below the 30th percentile (in the … 
psyc355
Children below the 30th percentile (in the bottom 30%) are in need of special assistance prior to attending school. What raw score marks the cutoff score for these children? 
Psychology Statistics
What raw score marks the cut off score for the children in the 30th percentile (in the bottome 30%) in need of special assistance prior to attending school? 
Math
Reading readiness of preschoolers from an impoverished neighborhood (=20) was measured using a standardized test. Nationally, the mean on thios test for preschoolers is 30.9, with SD = 2.08. a. children below the 30th percentile (in … 
statistics
interested in the mean IQ score of a given group of children. It is known that the IQ scores of the group have a standard deviation of . The psychologist randomly selects children from this group and finds that their mean IQ score …