Part 1 A population of values has a normal distribution with mean of 62.6 and standard deviation of 61.5. a) Get the z-score for a value of 50.8. For this problem you use the z score formula z=x−μσz=x-μσ b) This z-score tells you how many the score of 50.8 is above or below the population mean μμ . c) Find the probability that a randomly selected value is less than 50.8. Part 2 A population of values has a normal distribution with mean of 62.6 and standard deviation of 61.5. You sample 157 values from the population. a) Get the z-score for a sample mean of 50.8. For this problem you use the z score formula z=(¯x−μ)√nσz=(x¯-μ)nσ b) This z-score tells you how many the sample mean of 50.8 is above or below the population mean μμ . c) Find the probability that a sample mean is less than 50.8. Enter your numerical answers as numbers accurate to at least 4 decimal places.
Part 1
A population of values has a
a) Get the z-score for a value of 50.8. For this problem you use the z score formula z=x−μσz=x-μσ
b) This z-score tells you how many the score of 50.8 is above or below the population mean μμ .
c) Find the
Part 2
A population of values has a normal distribution with mean of 62.6 and standard deviation of 61.5.
You sample 157 values from the population.
a) Get the z-score for a sample mean of 50.8. For this problem you use the z score formula z=(¯x−μ)√nσz=(x¯-μ)nσ
b) This z-score tells you how many the sample mean of 50.8 is above or below the population mean μμ .
c) Find the probability that a sample mean is less than 50.8.
Enter your numerical answers as numbers accurate to at least 4 decimal places.
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