n= 502 The following are test scores of the first quarterly exam in Statistics and Probability. FindQ, Q, and Q.ScoreFrequency4.6.1-56- 1011-151016- 2021- 258.26 – 30n= 40

For the given data Find Q1,Q2 and Q3

Answered: 2 The following are test scores of the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Test Scores Your scores for the 20 surprise math quizzes last semester were (out of 10) as follows. 4.1 9.5 10.0 3.6 8.0 9.5 7.4 6.5 7.0 8.0 8.0 8.5 7.5 7.0 8.0 9.0 10.0 8.5 7.5 8.1 Use these raw data to construct a frequency table with the following brackets: 2.1-4.0, 4.1-6.0, 6.1-8.0, 8.1-10.0. Scores 2.1-4.0 4.1-6.0 6.1-8.0 8.1-10.0 Frequency Find the probability distribution using the (rounded) midpoint values as the values of X. 3.0 5.0 7.0 9.0 P(X = x)
A. Classify the following statements as to whether they belong to the area ofdescriptive statistics or inferential statistics ___________________ 4. A study found out that all customers who have received a giftcertificate from a store 75% went back to the store to shop.___________________ 5. The average grade in statistics of 50 students is 83.60. B. At what level are the following variables measured?_______________ 1. The scores of students in a statistics quiz_______________ 2. The birth order of children in the family_______________ 3. Weights of a sample of bags of raw materials for theproduction of a certain product, measured in grams._______________ 4. The natural eye color of a sample of 100 children._______________ 5. The final grade of graduate students taking up Statistics.
The median of the test scores given in the figure below is: Stem Leaves 667 2359 7 0011689 8. 11568 9. 0225 10 00 56 71 78 90
The median of the test scores given in the figure below is: Stem Leaves 667 6 2359 7 0011689 8 11568 6. 0225 10 00 56 71 78 90
Stress at work: In a poll about work, 51% of respondents said that their jobs were sometimes or always stressful. Eleven workers are chosen at random.What is the mean number who find their jobs stressful in a sample of 11 workers? Round the answer to two decimal places.
Workers at a private business was given a grade (A, B, C) based on their yearly performance. The data was recorded along with the department they belong. The results obtained using MINITAB are shown below: Expected counts are printed below observed counts A B C Total 12 8 7 Accounting (12.960) (7.830) (6.210) * 17 10 8 Sales (16.800) (10.150) (8.050) 35 19 11 8 Marketing (18.240) (**) (8.740) 38 Total 48 29 23 100 Chi-sq = 0.0711 + 0.0037 + 0.1005 + 0.0024 + 0.0022 + 0.003 + 0.0317 + 0.0000 +…
* The table shows a frequency distribution of Mathematic session marks for 120 students in the second stage at engineering faculty. Find the Quartiles of the distribution, then 30 students have marks equal to 65 or lower? Choose either True or : False Mark: 30-39 40-49 50-59 60-69 70-79 80-89 90-100 Number of Students 1 3 11 21 43 32 9 False O True O
Checkout times. The checkout times (in minutes) for 12 randomly selected customers at a large supermarket during the store's busiest time are: 5.8 6.1 11.5 11.1 11.1 13.5 6.2 7.7 7.1 12.3 13.6 13.7 a. Find the mean of the checkout times. mins (Type an integer or a decimal. Round to two decimal places.) b. Find the standard deviation of the checkout times. mins (Type an integer or a decimal. Round to two decimal places.) ncer Due A ent As DAY DEC
Group of 10 Throws Number of Tails Number of Heads Deviation (%) 1 5 5 2 4 6 3 5 5 4 7 3 5 4 6 TOTAL 25 25 Find its deviation.

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2 The following are test scores of the first quarterly exam in Statistics and Probability. Find Q, Q, and Q Score Frequency 1-5 6-10 6. 11-15 10 16- 20 21- 25 8. 26- 30 n= 40 7511