Statistics Project

Average first car price

• I asked every 3rd Jun. and Sen.
• asked average first car price to the nearest 500
• didn't add anyone who doesn't have a car

the data - first test

• Males have a higher first car price
• Ho: M1=M2 , H1: M1
• T= .80 , P= .5318 ; do not reject Ho
• X1=9366.67 , X2=9233.33
• insufficent evidence to conclude..

confidence interval - first test

• 95% confidence level 
• -3199
• two tests used 2sampTtest and 2sampTint

The data - second test

• Student's first car price thats 8000 or above
• X1=17 N1=30 / X2=16 N2=30
• Ho: P1=P2 , H1: P1 > P2. Z=.2595 P=.398
• do not reject Ho, there is insufficent evidence

confidence interval

• 98% confidence 
• -.2653
• the two tests used were 2propZtest and 2propZint

the data - third test

• students first price about or at $15,000
• X1=12 N1=60 / X2=48 N2=60
• Z= -6.573 P= 0, reject Ho 
• we conclude more individuals first car 
• prices are below $15000 than above

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