1)144 ft
2)6,600 cm
3)1,008 m
4)9,720m
Answer:
standard error = 1.63
Step-by-step explanation:
To calculate the standard error we need to know the standard deviation (σ) and the sample size (n) (see the attached formula).
To obtain the standard deviation we use the given sample variance of 77.4 years:
σ²= variance
Therefore:
σ = √77.4 = 8.8
Now we can calcuate the estimated standard error:
standard error = σ /√n = 8.8/√29 = 1.63
The standard error gives us an estimation about how far the mean of the sample is from the mean of the entire population, and in this case is 1.63.
Answer:4
Step-by-step explanation:
but they said it would have toend
Answer:
x=4,y=2
Step-by-step explanation:
solve one of the equations for x/y and then plug it into the other