Homework Answers
Answer :
a) The observation is
It cannot be determined without knowing the mean and standard deviation.
b) Observations smaller than this value comprise
Slightly less than half of the values in the distribution
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21) (8 points) The Z-score for an observation from a Normal distribution is -0.4. For the...
Find the Z-score corresponding to the minimum and maximum in the data set. I have already calculated the mean and standard deviation, but please help with questions 3, 4, and 5. This is a sample data set.
Consider the given data set.n = 12 measurements: 9, 8, 1, 3, 5, 5, 5, 4, 8, 5, 4, 0Find the mean. 4.75Find the standard deviation. (Round your answer to four decimal places.) 2.701Find the z-score corresponding to the minimum in the data set. (Round your answer to two decimal places.)z = Find the z-score corresponding to the maximum in the data set. (Round your answer to two decimal places.) z = Multiple Choice 5. Do the z-scores indicate...
Consider a distribution with a mean of 15 and a standard deviation of 3. If an observation from the distribution has a z...
Consider a distribution with a mean of 15 and a standard
deviation of 3.
If an observation from the distribution has a z-score of -2,
what is the value?
Consider a distribution with a mean of 15 and a standard deviation of 3. If an observation from the distribution has a z-score of -2, what is the value?
6. [-/1 Points] DETAILS MENDSTAT15 2.3.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A distribution of...
6. [-/1 Points] DETAILS MENDSTAT15 2.3.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A distribution of measurements has a mean of 65 and a standard deviation of 3. You know nothing else about the size or shape of the data. Use this information to find the proportion of measurements in the given interval. (Round your answer to two decimal places.) between 56 and 74 Need Help? Read It Talk to a Tutor 7. [0.2/1 Points] DETAILS PREVIOUS ANSWERS MENDSTAT15 2.4.001.MI.NVA...
QUESTION 1 The normal curve is particularly useful as a model for a. data in which...
QUESTION 1 The normal curve is particularly useful as a model for a. data in which mean and median differ b. many populations of psychological and educational data c. distributions of sample statistics d. both (b) and (c) above QUESTION 2 A distribution has a mean of 60 and a standard deviation of 8. For a score of 72, the equivalent z score a. is +1.5 b. is between 0 and +1.0 c. is + 1.2 d. cannot be determined...
- 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...
In a normal distribution, the mean corresponds to: Standard Score: z = Percentile: Which of the...
In a normal distribution, the mean corresponds to: Standard Score: z = Percentile: Which of the following statements are TRUE about the normal distribution? Check all that apply. A data value with z-score = -1.5 is located 1.5 standard deviations below the mean. The mean corresponds to the z-score of 1. The Empirical Rule only applies when a value is exactly 1, 2, or 3 standard deviations away from the mean. A z-score is the number of standard deviations a...
1) Given a standard normal distribution, find the probability of having a z score higher than...
1) Given a standard normal distribution, find the probability of having a z score higher than 1.67 ```{r} ``` 2) Given that test scores for a class are normally distributed with a mean of 80 and variance 36, find the probability that a test score is lower than a 45. ```{r} ``` 3) Given a standard normal distribution, find the Z score associated with a probability of .888 ```{r} ``` 4) Find the Z score associated with the 33rd quantile...
If the Z- score of normal distribution is 3.5 , the mean of the distribution is...
If the Z- score of normal distribution is 3.5 , the mean of the distribution is 35 and the standard deviation of normal distribution is 3 then the value of X for a normal distribution is ( show how you get the answer ) A. 97.5 B. 45.5 C. 52.5 D. 67.5
Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and...
Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. z 0.8438 A graph with a bell-shaped curve, divided into 2 regions by a line from top to bottom on the right side. The region left of the line is shaded and is labeled 0.8438. The indicated z score is (Round to two decimal places as needed.)
Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and...
Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1 C 0.2206 z 0 The indicated z score is (Round to two decimal places as needed.) Enter your answer in the answer box Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. 0.7517 z 0 The indicated z score isa (Round to two decimal places as needed.) Enter vour answer in...
Consider a distribution with a mean of 15 and a standard
deviation of 3.
If an observation from the distribution has a z-score of -2,
what is the value?
Consider a distribution with a mean of 15 and a standard deviation of 3. If an observation from the distribution has a z-score of -2, what is the value?
6. [-/1 Points] DETAILS MENDSTAT15 2.3.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A distribution of measurements has a mean of 65 and a standard deviation of 3. You know nothing else about the size or shape of the data. Use this information to find the proportion of measurements in the given interval. (Round your answer to two decimal places.) between 56 and 74 Need Help? Read It Talk to a Tutor 7. [0.2/1 Points] DETAILS PREVIOUS ANSWERS MENDSTAT15 2.4.001.MI.NVA...
Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1 C 0.2206 z 0 The indicated z score is (Round to two decimal places as needed.) Enter your answer in the answer box Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. 0.7517 z 0 The indicated z score isa (Round to two decimal places as needed.) Enter vour answer in...
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