In one community, a random sample of 2525 foreclosed homes sold for an average of $443,934 with a standard deviation of $195,364.

a) What assumptions and conditions must be checked before finding a confidence interval for the mean? How would you check them?
b) Find a 95% confidence interval for the mean value per home.
c) Interpret this interval and explain what 95% confidence means.
d) Suppose nationally, the average foreclosed home sold for $488,000. Do you think the average sale price in the sampled community differs significantly from the national average? Explain

Say that a supplier claims they are 99% confident that their products will be in the interval of 50.02 to 50.38. you take samples and find that the 99% confidence interval of what they are sending is 50.00 to 50.36. what conclusion can be made? homework : 5vd. comparing sample confidence intervals with given intervals (links to an external site.)links to an external site. (3: 43) 5dc. confidence intervals in manufacturing, high vs low level of confidence, wide vs narrow (links to an external site.)links to an external site. (docx) the supplier is less accurate than they claimed the supplier products have a lower mean than claimed the supplier is more accurate than they claimed the supplier products have a higher mean than claimed