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distributed satisfied

Homework  chapter 8 (1-15)

–          Table 1 : z table

–          Table 2: df  table

1.

A simple random sample of 25 observations is derived from a normally distributed population with a known standard deviation of 8.2. Use Table 1.

 

a.Is the condition that  formula76.mml is normally distributed satisfied?
  
 
  PRIVATE “<INPUT TYPE=”radio” NAME=”Q_13252699393847617_ans1” VALUE=”0”>” MACROBUTTON HTMLDirect Yes
  PRIVATE “<INPUT TYPE=”radio” NAME=”Q_13252699393847617_ans1” VALUE=”1”>” MACROBUTTON HTMLDirect No

 

b.Compute the margin of error with 80% confidence. (Round intermediate calculations to 4 decimal places, “z” value and final answer to 2 decimal places.)

 

  Margin of error  PRIVATE “<INPUT TYPE=”text” SIZE=”7” NAME=”Q_13252699393847617_ans2” VALUE=””>” MACROBUTTON HTMLDirect

 

c.Compute the margin of error with 90% confidence. (Round intermediate calculations to 4 decimal places, “z” value and final answer to 2 decimal places.)

 

  Margin of error  PRIVATE “<INPUT TYPE=”text” SIZE=”7” NAME=”Q_13252699393847617_ans3” VALUE=””>” MACROBUTTON HTMLDirect

 

 

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