In a normal distribution with mean 3 and standard deviation of 7, what are the upper and lower limit x values for the middle 50% of the data?
In a normal distribution with mean 3 and standard deviation of 7, what are the upper...
13. If we have a normal distribution with a mean of 75 and a standard deviation of 3. a. what z-score(s) would cut off the middle 40% of the distribution? b. what raw score(s) would cut off the lower 12% of the distribution? c, what raw score(s) would cut off the most extreme 5% of the distribution? d, what T-score(s) would cut off the upper 20% of the distribution?
13. If we have a normal distribution with a mean of...
A distribution of values is normal with a mean of 220 and a standard deviation of 17. From this distribution, you are drawing samples of size 20. Find the interval containing the middle-most 78% of sample means:
A distribution of values is normal with a mean of 230 and a standard deviation of 25. From this distribution, you are drawing samples of size 27. Find the interval containing the middle-most 70% of sample means:
Given a normal distribution with (mean) μ= 50 and (standard deviation) σ = 5, what is the probability that: a) X>60 b) X<40 c) X<45 or X>65 d) Between what two values (symmetrically distributed around the mean) are ninety percent of the values?
A distribution of values is normal with a mean of 170 and a standard deviation of 12. From this distribution, you are drawing samples of size s7. Find the interval containing the middle-most 50% ofsample means: 171.3 Enter your answer using interval notation. In this context, either inclusive or exclusive intervals would be acceptable. Your numbers should be accurate to 1 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
distribution of values is normal with a mean of 90 and a standard deviation of 25. From this distribution, you are drawing samples of size 12. Find the interval containing the middle-most 68% of sample means:
In a normal distribution with a mean of 78 and a standard deviation of 7, what is the probability that a score will be between 71 and 85?' 15.87% 31,74% 68.26% 34.13%
For a population distribution with Mean = 85 and a Standard Deviation of 4, what are the upper and lower limits for 95.4% of the values?
Suppose X has a normal distribution with mean 80 and standard deviation of 10. Between what values of x do 95% of the values lie? a)50 and 110 b)60 and 90 c)60 and 100 d)75 and 85
A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121.