z score tells us about the location of a particular x score with respect to mean value in terms of standard deviations.
So, a z-score of -1.5 means that the x score or women weight is 1.5 standard deviations below the mean
Hence, option B is answer
B) her weight is 1.5 standard deviations below average
A women is told her weight has a standard acore (z-score) of -1.5. this means that...
In a distribution of scores, a score value (X) has a z-score of 2. How would interpret z-score of 2. Select one: O a. The particular score (X) is two standard deviations above the mean. b. The particular score (X) is two points above the mean. c. The particular score (X) is two points below the mean. d. The particular score (X) is two standard deviations below the mean.
2. For the women age 18-24 in the Health and Nutrition Examination survey of 1976-80, the average weight was about 134 pounds; and the standard deviation was about 27 pounds. The weight follows a normal curve. a) (1 point) What do we mean by saying the weight “follows a normal curve”? In other words, how would you describe a normal curve? b) (1.5 points) Using the normal curve, estimate the percentage of women with weight: (i) below 134 pounds (ii)...
A z score of 1.25 represents an observation that is a) 1.25 standard deviation below the mean. b) 0.25 standard deviations above the mean of 1. c) 1.25 standard deviations above the mean. d) both b and c Assume that your class took an exam last week and the mean and standard deviation of the exam were 85 and 5, respectively. Your instructor told you that 30 percent of the students had a score of 90 or above. You would...
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. What position in the distribution corresponds to a z-score of z = .50? A. Below the mean by a distance equal to 0.5 standard deviations. B. Below the mean by 0.5 points. C. Above the mean by 0.5 points. D. Above the mean by a distance equal to 0.5 standard deviations. 2. Which of the following z-score values represents the location closest to the mean? A. z=+1.50 B. z=+1.00 C. z=-0.75 D. z=-2.00 3. For a population with µ...
A z-score of +1.5 indicates a position that is located: Group of answer choices A. Above the mean by 1.5 times the mean. B. Above the mean by 1.5 times the variance. C. Above the mean by 1.5 times the standard deviation. D. Above the mean by 1.5 times raw score points.
Suppose that student’s z score is 3.00 what does this mean? discuss in terms of units of standard deviation It means the value defined by z-score is 3 standard deviations away from the mean value. Discuss in terms of its percentile score. In terms of percentile score, its mean amount of data lies below the value. Z=3 represent the 99.87 the percentile. 4. How does this student’s z score differ from another student whose z score is -3.00 5. If...
The average weight of a newborn baby is 6.4 pounds with standard deviation 1.2 pounds. If a baby girl weighs 5.5 pounds at birth: what is the z score? what is her percentile?
Q3: The score of IQ has a normal distribution. Suppose the average IQ score is 110 and the standard deviation is 15. a. What is the IQ score that is 1.5 standard deviations higher than the average and what proportion of people exceed that score? b. A person is selected at random. What is the probability that his/her IQ score is between 95 and 140? 20.1587 = 1 and 20.0668 = 1.5 and 20.0228 = 2 and 20.0013 = 3
A distribution has a standard deviation of o= 12. Find the Z-score for each of the following locations in the distribution. a. Above the mean by 3 points. b. Above the mean by 12 points. c. Below the mean by 24 points. d. Below the mean by 8 points. For a population with u = 50 and o= 8, find the z-score for each of the following X values. a. X= 54 b. X= 62 c. X= 52 d. X=...