what z score value separates the top 70% of a normal distribution from the bottom 30%?
solution:-
z score value separates the top 70% of a normal distribution from the bottom 30%
z = -0.52
what z score value separates the top 70% of a normal distribution from the bottom 30%?
For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.
Determine the z-score value in each of the following scenarios: a. What z-score value separates the top 8% of a normal distribution from the bottom 92%? Using standard normal table, a) P(Z < z) = 0.92 To see the probability 0.92 in the standard normal table the corresponding z value is 1.405 . P(Z < 1.405) = 0.92 z - score = 1.405 b) P(Z < z) = 0.28 Please can you show me how to get the exact calculations...
For a normal distribution, find the z-score that separates the highest 30% from the rest of the distribution. What formula do I use to get the answer and where to find the values to use in the formula?
for a normal distribution: a. what z-score separates the highest 40% from the rest of the scores b. what z-score separates the lowest 15% from the rest of the scores
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What z score separates the bottom 21% of the distribution from the rest of the distribution? - 0.5 +0.5 - 0.8 +0.8 Dr. Kelly predicted students in his evening classes slept fewer hours per week than students in his morning classes. The hypothesis specified is called a __________ hypothesis and the critical region is ________. Two tailed, split between the two tails of the distribution One tailed; concentrated in one tail of the distribution Bi-directional, concentrated in one tail of...
(a) For a normal distribution, find the Z-score that cuts off the bottom 64.18% of all the z-scores. Round to 2 decimal places after the decimal point. answer: (b) For a normal distribution, find the Z-score that cuts off the top 58.89% of area. Round to 2 decimal places after the decimal point. answer:
Please explain in steps, Thank You!! 7. What z-score value separates the highest 10% of the scores in a normal distribution from the lowest 90%? 8. Scores on the SAT form a normal distribution with a mean of μ-550 with σ 100. If the state college only accepts students who score in the top 65% on the SAT, what is the minimum score needed to be accepted? What does that z-score become if they change their criteria so that only...
For the normal distribution, find the z-score values that separate the distribution into 3 secitons (a body and two tails) as determined by the following percentages. (Round your answers to two decimal places.) (a) The middle 60% of the distribution from the 40% in the tails. z = (smaller value) z = (larger value) (b) The middle 70% of the distribution from the 30% in the tails. z = (smaller value) z = (larger value) (c) The middle 80% of...
For a normal distribution with mean of 70 and sd 10, what is the minimum score necessary to be in the top 60% of the distribution?