Answer:
we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.
Step-by-step explanation:
H0 : μ = 582
H1 : μ < 582
Test statistic :
T = (xbar - μ) ÷ σ/√n
Xbar = 515 ; n = 20 ; σ = 120
T = (515 - 582) ÷ 120/√20
T = -67 / 26.832815
T = 2.50
Pvalue at t score = 2.50 ; df = 19 is 0.0187
At α = 0.0187
Pvalue > α ; Hence, we fail to reject the Null
Hence, we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.
They are similars because If you see the picture
Multiply her monthly payment by the number of months she paid so far:
567 x 48 = 27,216 paid so far.
Now add the amount she still owes:
27,216 + 1,250 = $28,466 total price.
Answer: D
Step-by-step explanation: Just took the test
Answer:
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Step-by-step explanation: