SOLUTION: 1. For a normally distributed population with m = 200, standard deviation of 10 what is the probability of picking one member of the population at random and have it fall: a.

Question 214663: 1. For a normally distributed population with m = 200, standard deviation of 10 what is the probability of picking one member of the population at random and have it fall:
a. Between 180.40 and 219.6?
b. Above 219.6?
c. Below 180.4?
2. Scores on a standardize test have a mean of 150 and a standard deviation of 15. You are told your score is in the top 1% of the people who took the test. What score defines the top 1% of all scores?
3. A sample of 144 results in a sample mean of 14 and a sample standard deviation of 24. What is the 95% confidence interval on the population mean? What information does the confidence interval give?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1. For a normally distributed population with m = 200, standard deviation of 10 what is the probability of picking one member of the population at random and have it fall:
a. Between 180.40 and 219.6?
b. Above 219.6?
c. Below 180.4?
2. Scores on a standardize test have a mean of 150 and a standard deviation of 15. You are told your score is in the top 1% of the people who took the test. What score defines the top 1% of all scores?
3. A sample of 144 results in a sample mean of 14 and a sample standard deviation of 24. What is the 95% confidence interval on the population mean? What information does the confidence interval give?
-------------------
I could show you the answers to these questions but feel you
would not learn from that. Please be specific and state what
your difficulty is in solving these and show how far you can
get with them.
Cheers,
Stan H.
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