Use the appropriate z-score table to determine the following: a.) What z-score separates the bottom 5%...
Use the appropriate z-score table to determine the following:
a.) What z-score separates the bottom 5% from the rest? (round to two decimal places)
Answer
b.) What z-score separates the top 23% from the rest? (round to two decimal places)
Answer
c.) Suppose a data set is normally distributed with a mean of 25 and a standard deviation of 7. What data value (to the nearest whole number) would correspond to a z-score of ?
Answer
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Use the appropriate z-score table to determine the
following:
a.) What z-score separates the bottom 5%...
15) Assume that z scores are normally distributed with a mean of 0 and a standard...
15) Assume that z scores are normally distributed with a mean of 0 and a standard deviation 15) of 1. If P(z> c) 0.109, find c. olve the problem. 16) 16) Scores on an English test are normally distributed with a mean of 37.4 and a standard deviation of 7.9. Find the score that separates the top 59% from the bottom 41% 17) Suppose that replacement times for washing machines are normally distributed with a 17) mean of 10.9 years...
what z score value separates the top 70% of a normal distribution from the bottom 30%?
what z score value separates the top 70% of a normal distribution from the bottom 30%?
Determine the z-score value in each of the following scenarios: a. What z-score value separates the...
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 standard normal curve, find the z-score that separates the bottom 90% from the top 10%
For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.
What z score separates the bottom 21% of the distribution from the rest of the distribution?...
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...
please answer all, i will rate you! 1. Which of the following best describes a z-score?...
please answer all, i will rate you! 1. Which of the following best describes a z-score? A normal distribution with a mean of 0 and a standard deviation of 1. The area under the density function. Finding a data point, given the probability of being less than that data point. The number of standard deviations from the mean. Finding the probability of being between two data points. 2. Which of the following is the purpose of invNorm in the calculator?...
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Fi...
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to two decimal places. O A. 66.60 O B. 0.29 ОС. 088 O D. 73.47
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to...
- What proportion of a normal distribution is located between each of the following Z-score boundaries?...
What proportion of a normal distribution is located between each of the following Z-score boundaries? a. z= -0.50 and z= +0.50 b. z=-0.90 and z= +0.90 c. z=-1.50 and z= 1.50 For a normal distribution with a mean of μ = 80 and a standard deviation of σ= 20, find the proportion of the population corresponding to each of the following. a. Scores greater than 85. b. Scores less than 100. c. Scores between 70 and 90. IQ test scores are standardized to produce a normal distribution with...
Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years...
Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation of 1.1 years. Find the replacement time that separates the top 3% from the bottom 97% . Round your answer to 3 decimal places.
for a normal distribution: a. what z-score separates the highest 40% from the rest of the...
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
15) Assume that z scores are normally distributed with a mean of 0 and a standard deviation 15) of 1. If P(z> c) 0.109, find c. olve the problem. 16) 16) Scores on an English test are normally distributed with a mean of 37.4 and a standard deviation of 7.9. Find the score that separates the top 59% from the bottom 41% 17) Suppose that replacement times for washing machines are normally distributed with a 17) mean of 10.9 years...
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to two decimal places. O A. 66.60 O B. 0.29 ОС. 088 O D. 73.47
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to...
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