STATLIT SAMPLE FINAL EXAM

# Determine the z value that will give an area of 09 to

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39. Determine the z-value that will give an area of 0.9 to the left. For numbers 40 to 44: The distribution of midterm exam scores in STATLIT is normal with mean 81 and standard deviation 6. ( Please refer to the given statistical output s below) Normal Probabilities Common Data Mean 81 Standard Deviation 6 Probability for a Range Probability for X <= From X Value 85 X Value 93 To X Value 93 Z Value 2 Z Value for 85 0.666667 P(X<=93) 0.9772499 Z Value for 93 2 P(X<=85) 0.7475 Probability for X > P(X<=93) 0.9772 X Value 85 P(85<=X<=93) 0.2297 Z Value 0.6666667 P(X>85) 0.2525 Find X and Z Given Cum. Pctage. Cumulative Percentage 25.00% Probability for X<93 or X >85 Z Value -0.67449 P(X<93 or X >85) 1.2297 X Value 76.95306 Find X and Z Given Cum. Pctage. Cumulative Percentage 75.00% Z Value 0.6744898 X Value 85.0469
7 Probability for X > X Value 95 Z Value 2.3333333 P(X>95) 0.0098 Find X and Z Given Cum. Pctage. Cumulative Percentage 75.00% Z Value 0.67449 X Value 85.04694
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