1. In an examination, the mean grade is 81 and the standard deviation is 6. Find the Z-score of the grades of the following students. IF POSSIBLE, ANSWERS SHOULD BE UP TO 2 DECIMAL PLACES ONLY. Answer the following: a. Arman, 75 b. Luiz, 90 c. Clara, 62

Q: Illustration : The mean and standard deviation of a set c 100 observations were 40 and 5 respective…

A: Mean is the average value of given observations. For a set of 'n' observations, mean is the sum of…

Q: Find the mean of the data summarized in the given frequency distribution. Compare the computed mean…

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Q: The mean is approximately (Round to the nearest whole number as needed.)

A: It is given that  n1 = 7 X̄1 = 240 n2 = 4 X̄2 = 190

Q: The mode score on a statistics exam was 83. Which of these interpretations is correct? A.More…

A: Given information Mode score on a statistics exam = 83 Mode = The number having highest frequency is…

Q: The mean and S.D. of income of 50 men are Rs. 3200 and Rs. 525 respectively The same for 40 women…

A: Formula for S.D for combined group: σ12=n1(σ12+d12)+n2(σ22+d22)n1+n2          Combined mean is,…

Q: After 5 points are added to each score in a sample, the mean is found to be M=45 . What was the…

A: Given data: c = 5 points are added to each score in a sample. New mean, M = 45 Let the original mean…

Q: Joey took examinations in Algebra, Physics, Chemistry and English and scored 84, 79, 88 and 93…

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Q: C. Tell whether the given data is descriptive or inferential statistics. 1. The average age of the…

A: The three scenarios are given. We have to identify whether the given data is descriptive or…

Q: Suppose a biologist studying the mechanical limitations of tree growth monitors a national preserve.…

A: Given data is45,80,71,67,45,92,87,67,76,45

Q: Illustration 17.30. A distribution is known to be normal. The quartiles are 8.64 and 14.32.…

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Q: The test scores for five students were 59, 60, 63, 76, and 87. How many points greater than the…

A: The mean is the average of all the values, or it is the sum of all the values divided by the number…

Q: The number of credits registered by a group of students as follows. a. Find the mean and the median.…

A: Given information- a) We have given 5 data set. 15 19 14 17 16 15 Here I am using excel for…

Q: The mean number of people per day visiting an art show in July was 110. If 20 more people each day…

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Q: To the nearest tenth, what is the geometric mean of the following data set? 15, 25, 35, 40.

A: We have the given set of data we have to find the geometric mean   the given data is 15, 25, 35,…

Q: A data set has five values. The largest value is 26. The median is 19. The mode is 15. The mean is…

A: GivenThe largest value is 26The median = 19The mode = 15The mean is 19.2

Q: find the mean if Z-score =14, st.Dev.=2.5, for a score of 8.5

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: Given the data set: 194,219,93,299,191, calculate the deviation score associated with 93. Enter your…

A: The mean is calculated as follows: μ=∑xN  =194+219+93+299+1915  =199.2 The mean is 199.2.

Q: Jane got the following grades (%) on her final year report card: 76, 94, 56, 78, 62, 88, 94, 86 and…

A: Given data is76, 94, 56, 78, 62, 88, 94, 86,72sample size(n)=9

Q: Find a. the​ mean; b. the deviation from the mean for each data​ item; and c. the sum of the…

A: Given data set is 157, 158, 163, 167, 170

Q: Mark went around the neighborhood collecting spare change for charity. The 7 families gave: $5.00 ,…

A: The spare change amount given by families for charity is:- $ 5.00 $ 4.00 $ 4.00 $ 6.00 $…

Q: Christopher is 6' (72") tall.  The population mean height for men in the United States is 5' 10"…

A: Let X be the height for men in inches.Here,X~N(70,32),i.e.,X~N(70,9).Let x be the value of…

Q: elow are the summary statistics calculated from the heights of students on a university campus. 25%…

A: It is given that the first quartile is 58.

Q: Find the mean of the following data: 0, 5, 30, 25, 16, 18, 19, 26, 0, 20, 28 A. 0 B. 18 C. 19 D. 17

A: According to the given information it is required to calculate the mean of the given data.

Q: A veterinarian recorded how many kittens were born in each litter. This data is summarized in the…

A: A histogram is a graphic representation of data that uses bars of various heights. Each bar in a…

Q: The heights of 13 boys and 12 girls were measured. It was found that the mean height of boys was…

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Q: Jane got the following grades (%) on her final year report card: 76, 94, 56, 78, 62, 88, 94, 86 and…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: After every score in a sample is multiplied by 4, the mean is calculated and found to be M=24. What…

A: Here we need to find the original mean. It is given that every score in the sample is multiplied by…

Q: Suppose 6 students take an exam, and the mean score is 82.5. Five of the student scores are as…

A: Solution-: Given: Mean=82.5 Five of the student scores are: 95, 78, 85, 56, and 96.  We want to find…

Q: Convert the following to T-score: c. Raw score of 96; mean of 45; SD of 21 d. Raw score of 55; mean…

A: formula for t-score is T = (X-u)/SD

Q: Calculate mean of the data set: 4, 5, 0, 10, 8, and 3?

A: Number of samples (n) = 6 Plug in all the values in the formula, we get Therefore,

Q: The mean grade of  Adrian in the final examination in mathematics was 85 and the standard deviation…

A: Mean for mathematics = 85 Standard Deviation for mathematics = 7 Mean for science = 89 Standard…

Q: 1. The first decile is the A. 2nd quartile 2. It divides the data into a lower half and an upper…

A: Solution