Using the following distribution of scores, find the percentile rank corresponding to X=7.0:   X         f           ________   10        2 9          8 8          4 7          6 6          4 5          1

Q: A population is normally distributed with a mean of u = 145 and o 20. Which is the percentile rank…

A: According to the given information, we have The distribution is normal. Mean = 145 Standard…

Q: Calculate the 1st quartile, 7th decile, 35th percentile, and percentile rank of 115 and 155 for the…

A: Given data: Class Interval Frequency 71-80 4 81-90 9 91-100 13 101-110 11 111-120 7…

Q: The following histogram presents the distribution of the exam scores for a group of engineering…

A: a) The probability below 130 is: 0.02+0.02+0.08+0.1+0.13+0.17+0.14+0.11=0.77=77% approximately.  So…

Q: For the given data set of number (x): X= {80.5, 85.71,82.47, 87.41, 68.9, 70.10 , 0, 100:28, 90.25,…

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Q: how many individuals had a score of X = 4?

A: Sol:-          Here 'X' is a random variable that denotes the quiz score of the student. And, 'f'…

Q: Find the following percentile and percentile ranks for a normal distribution with a mean of μ = 120…

A: Hello. Since your question has multiple parts, we will solve first 3sub parts question for you. If…

Q: 3. For the following distribution of quiz scores, if a score of X = 4 or lower is a failing grade,…

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Q: If a set of data is normally distributed, what percent of the data falls between a z- score of -090…

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Q: 2. Using the following distribution of scores, find the 15th percentile. X 20-24 15-19 10-14 5-9 0-4…

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Q: For the following data in the sample: 10, 6, 8, 6, 5 a. Find the mean and the standard deviation. b.…

A: The Solution is as follows,

Q: x 25.3 2 9 17 15.1 13.5 8.8 18

A: The mean is calculated as: Hence, the mean is 13.65.

Q: At the Fisher farm, the weights of zucchini squash are Normally distributed. Which standardized…

A: Given- The weights are Normally Distributed. To find- The weight that represents the 5th percentile?

Q: Using the sample formulas, find the mean, variance, and standard deviation for the grouped data…

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Q: Body temperatures of healthy humans are distributed nearly normally with mean 98.2°F and standard…

A: Given Mean, μ=98.2SD, σ=0.73

Q: The degrees of freedom of a t-distribution is 25. 1.708 is to what percentile of the distribution?…

A: The degrees of freedom is df = 25 The value of x is x = 1.7098 The area up-to x = 1.7098 is

Q: 1a) Use the F statistic to test the significance of the relationship at a 0.05 level of…

A: a) It is needed to test significance of the relationship.

Q: e. The weight that divides the distribution such that 1% of the weights are above it. f. Beyond what…

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Q: Two samples, each with n = 9 scores, produce an independent-measures t statistic of t = +2.00. If…

A: Where t denotes the value of test statistic.

Q: Let X be an Frandom variable with 4 numerator degrees of freedom and 5 denominator degrees of…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: J 2 To determine the distribution of the height of female grade 6 students in a developing country,…

A: Descriptive Statistics The evaluation, description, and presentation of outcomes referring to an…

Q: Find each value requested for the distribution of scores in the following table.a. nb. ΣXc. ΣX x…

A: Frequency distribution that explains the how often a variable occurs in a tabular form. Here, N=∑f

Q: The following data represent the results from the specific gravity (S.G.) test performed in a soil…

A: Given: Specific gravity Number of samples 2.30-2.39 2 2.40-2.49 4 2.50-2.59 6 2.60-2.69…

Q: The following table shows the distribution of the maximum loads in short tons supported by certain…

A: Maximum load   No. of cables Cumulative frequency 9.3-9.7               2               2…

Q: Given that X Uniform [a,8] with an 80th percentile value of 5.5. Find the value of a. -0.3 1.282…

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Q: In each of Exercises, the quantitative data set under consideration has roughly a bell-shaped…

A: a)According to empirical rule approximately 68% of observations lie within one standard deviation to…

Q: Which X value corresponds to a percentile rank of 59? (assume scores measure a continuous variable)…

A: Given, x = 1,2,3,4 n = 4 Percentile = 59

Q: Use the data in the table to Salary (in Pesos) No. of Employees (f) compute the following…

A: A decile is a numerical method of dividing a set of ranked data into ten equal-sized subsections.A…

Q: Is given below. Class Interval Frequency Deviation Scores No. of students (d) 35-39 7. 21 63 60…

A: Given data is Class Interval Frequency 5 - 9 3 10 - 14 3 15 - 19 5 20 - 24 15 25 - 29…

Q: For the following distribution of quiz scores,if a score of X=4 or lower is a failing grade,how many…

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Q: The data below give the amount of money spent on gasoline by 15 individuals over a one week period.…

A: The question is based on a percentile and percentile rank Given :

Q: In each situation below, calculate the standardized score (or z-score) for the value x. A USE SALT…

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Q: Éxample 12. Calculate the mean deviation about the mean for the following data: 5 15 25 35 45 55 65…

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Q: 1. For the following data sets, calculate the quartiles and find the interquartile range. a. The…

A: Given : 18 34 58 22 20 92 46 62 48 29 45 37

Q: For the following distribution, what percentage of the individuals have scores of X= 1? X 4 8. 3 2 3…

A: The formula for calculating the probability for frequency table is, The below table shows the…

Q: The following is a distribution of measurements for a continuous variable. Find mode, mean, and…

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Q: The following data are given to an economist for the purpose of economic analysis. The data refer to…

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Q: Find the following percentile and percentile ranks for a normal distribution with a mean of ?…

A: The mean is 120 and the standard deviation is 15.

Q: e 32. The mean and standard deviation of normal distribution are 60 and 5 espectively. Find the…

A: The mean is 60 and the standard deviation is 5.

Q: For the following distribution of quiz scores, what is E X? 6 4 3 1 1 3 4 5 X 2. 2.

A: We have given the distribution of Quiz scores. Summarizing the data in the form of a table- x f…

Q: X f cum % 10 5   9 8   8 15   7 6   6 5   5 2   4 4   3 3   2 1   1 0…

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

Q: Suppose f(x) = 1/20 from 5 to 25. What is the 25th percentile of X? %3D 10 1/20 None of the other…

A: F(x) = 1/20 from 5 to 25

Q: d) A students with a score higher than 50% of those taking the exam has a score of... e) A students…

A: 1. d) The random variable X is defined as the scores on a mathematic exam which follows normal…

Q: The data below shows that a total of People 450 1500 2300 5700 6850 8000 over 12 hours. Time (hours)…

A: Given that  Find 3rd quartile  40th percentile  Decile D5:

Q: The mean value of X in the below table is : -5 -1 1 4 P(x) 0.09 0.25 0.15 0.24 0.27

A: For discrete random variable, we know that the mean of random variable is given as, E(X) = Σ…

Q: 24) . Which of the following is the 90 percentile of a t-distribution wilth degree of freedam equal…

A: 24. The 90th percentile of a t-distribution with degree of freedom equal to 25. Computation of…

Q: Q2 find the mean and variance of the following distribution .f(x)= 6x(1-x) , 0<x<1 Also find P (µ ·…

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Q: Find each value requested for the distribution of scores in the following table. а. п b. ΣΧ c. EX? f…

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Q: 1. a. What is the area to the left of t₁, if the shaded area to the right-hand tail of the…

A: As per bartleby guidelines we can solve only first question and including first three subparts and…

Q: Q.NO.1: a) For the following calculate mean deviation using median. Height No. of Boys 55 56 57 58…

A: Step 1:  We have to find the mean deviation from median. for that we have to find median by drawing…

Q: III: 8.2 hours. (c) Every package of Christmas chocolate set contains one pack of white chocolate…

A: Dear students as per guidelines we answer the first question only when multiple different question…