Answer:
420
Step-by-step explanation:
Simple addition! I double checked!
Answer: 2.5 hours
Step-by-step explanation: 23.75 divided by 9.5
Answer:
400
Step-by-step explanation:
40 divided by .1
Answer:
The value of the test statistic and degrees of freedom is 2.148 and 11 respectively.
Step-by-step explanation:
Consider the provided information.
The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 .
Thus, n = 12,
σ = 5000
degrees of freedom = n-1 = 12-1 = 11

Formula to find the value of z is: 
Where
is mean of sample, μ is the mean of population, σ is the standard deviation of population and n is number of observations.


Hence, the value of the test statistic and degrees of freedom is 2.148 and 11 respectively.
Answer:
x=6
Step-by-step explanation: