A normal distribution has a mean of u= 40 and o=10. if a vertical line is drawn through the distribution at x= 55, what proportion of the scores on the right side of the line?
A normal distribution has a u= 80 and o= 10. what is the probability of randomly selecting a scoregreaterthan 90 from this distribution?
See attached file.
1. For a population with a mean of µ=60 and a standard deviation of ?=24, find the z-score corresponding to each of the following samples.
A. M=63 for a sample of n=16 scores
B. M=63 for a sample of n=36 scores
C. M=63 for a sample of n=64 scores
2. A population of scores forms a normal distribution
1. The distribution of SAT scores is normal with µ=500 and σ=100.
a. What SAT score, x-value separates the top 15% of the distribution from the rest?
b. What SAT score. X-value separates the top 20% of the distribution from the rest?
c. What SAT score. X-value separates the top 25% of the distribution from the rest?
In a bag there are 20 marbles. The colors of the marbles are as follows: red - 5; blue - 8; green - 3; yellow - 4.
a. What is the probability of selecting a red marble?
b. What is the probability of selecting a blue marble?
c. What is the probability of selecting a pink marble? None
d. What is the probability of selectin
A normal population has an average of 80 and a standard deviation of 14.0.
Calculate the probability of a value between 75.0 and 90.0.
Calculate the probability of a value of 75.0 or less.
Calculate the probability of a value between 55.0 and 70.0.
The oasis outpost of Abu Ilan, in the heart of the Negev desert, has a population of 20 Bedouin tribesmen and 20 Farima tribesmen. El Kamin, a nearby oasis, has a population of 32 Bedouins and 8 Farima. A lost Israeli soldier, accidentally separated from his army unit, is wandering through the desert and arrives at the edge of o
I need help with some practice problems that were given to us, to help prepare for a quiz next week. Please provide detailed steps as to how you came by your answer (include any notes, calculations, or anything that may be pertinent to the solution).
As always, your help would be greatly appreciated!
1. For a population with µ=50 and σ=10,
A. What is the z-score for X=55, X=60, X=75, X=45, X=30 and X=35?
B. Find the X value that corresponds to each of the following z-scores, z=1.00, z=0.80, z=1.50, z= -0.50, z= -0.30 and z= -1.50.
2. Find the z-score corresponding to a score of X=60 for each of the following dis