25. In Alaska, a random sample of 19 eight-grade students had a mean score of 275 with a population standard deviation ...

  

25. In Alaska, a random  sample of 19 eight-grade students had a mean score of 275 with a population  standard deviation  of 55 on a national  mathematical assessment test.  This  prompts  Dr. Norman  Schwartzkoff, the state  school administrator  to declare that  the mean score was significantly  lower than  285, which is the national average.  At a 10 percent  significance level, is there  enough evidence to support the administrator's claim?  Assume the population standard deviation is unknown.  Use the "t" procedure.  (7 pts)

26. Please use a Pie Chart  to display the data.  The data is for FFY 2011, in millions of dollars.

(3 pts)

  

NASA BUDGET Human space flight

$8,499.9

 

Science, aeronautics and technology

$5,929.4

 

Mission support

$3,584.0

 

Inspector General

$1,022.7