A distribution of values is normal with a mean of 225.5 and a
standard deviation of 86.5.
Find P49, which is the score separating the
bottom 49% from the top 51%.
P49 =
Solution:-
Given that,
mean = = 225.5
standard deviation = = 86.5
Using standard normal table,
P(Z < z) = 49%
= P(Z < z ) = 0.49
= P(Z < -0.03 ) = 0.49
z = -0.03
Using z-score formula,
x = z * +
x = -0.03 * 86.5 + 225.5
x = 222.9
P49 = 222.9
A distribution of values is normal with a mean of 225.5 and a standard deviation of...
1.A distribution of values is normal with a mean of 6.3 and a standard deviation of 83.3. Find P57, which is the score separating the bottom 57% from the top 43%. P57 = 2.A distribution of values is normal with a mean of 180.3 and a standard deviation of 20.5. Find P71, which is the score separating the bottom 71% from the top 29%. P71 =
A distribution of values is normal with a mean of 87.6 and a standard deviation of 39.3. Find P25, which is the score separating the bottom 25% from the top 75%. P25 = Enter your answer as a number accurate to 4 decimal places.
A distribution of values is normal with a mean of 248.5 and a standard deviation of 89. Find P28, which is the score separating the bottom 28% from the top 72%. Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 232.7 and a standard deviation of 54.3. Find P1, which is the score separating the bottom 1% from the top 99%. P1 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 211.4 and a standard deviation of 85.8. Find P96, which is the score separating the bottom 96% from the top 4%. P96 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 47.1 and a standard deviation of 24.2. Find P53, which is the score separating the bottom 53% from the top 47%. P53 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 157.8 and a standard deviation of 21.7. Find P11, which is the score separating the bottom 11% from the top 89%. P11 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 197.3 and a standard deviation of 26.6. Find P9, which is the score separating the bottom 9% from the top 91%. P9 = 163 Incorrect Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A population of values has a normal distribution with ?=147.3 and ?=75.7. You intend to draw a random sample of size n= 222. Find P38, which is the score separating the bottom 38% scores from the top 62% scores. P38 (for single values) = For the sample of 222, find P38, which is the mean separating the bottom 38% means from the top 62% means. P38 (for sample means) = Enter your answers as numbers to 1 decimal place.
A population of values has a normal distribution with μ=170.7μ=170.7 and σ=70σ=70. You intend to draw a random sample of size n=212n=212. Find P79, which is the score separating the bottom 79% scores from the top 21% scores. P79 (for single values) = Find P79, which is the mean separating the bottom 79% means from the top 21% means. P79 (for sample means) =