2. Test Scores in a Training Institute A certain traininginstitute gives a standardized test to large numbers ofapplicants nationwide. The resulting scores form a nor-mal distribution with mean 80 and standard deviation 5.Find the percent of all applicants with scores as follows.(Use the empirical rule.) T(a) between 70 and 90(b) greater than 95 or less than 65(c) less than 75(d) between 85 and 90wing val-umericalNear recordFine

Let X be the test score from normal distribution X~N(μ=80 , σ=5) To find the percent of all…

Answered: the empirical rule. (a) between 70 and…

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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n x 0.1 0.2 0.25 0.3 0.4 0.5 0.6 0.7 0.75 0.8 0.9 90 0.387 0.134 0.075 0.040 0.010 0.002 0.000 0.000 0.000 0.000 0.000 1 0.387 0.302 0.225 0.156 0.060 0.018 0.004 0.000 0.000 0.000 0.000 2 0.172 0.302 0.300 0.267 0.161 0.070 0.021 0.004 0.001 0.000 0.000 3 0.045 0.176 0.234 0.267 0.251 0.164 0.074 0.021 0.009 0.003 0.000 4 0.007 0.066 0.117 0.172 0.251 0.246 0.167 0.074 0.039 0.017 0.001 5 0.001 0.017 0.039 0.074 0.167 0.246 0.251 0.172 0.117 0.066 0.007 6 0.000 0.003 0.009 0.021 0.074 0.164 0.251 0.267 0.234 0.176 0.045 7 0.000 0.000 0.001 0.004 0.021 0.070 0.161 0.267 0.300 0.302 0.172 8 0.000 0.000 0.000 0.000 0.004 0.018 0.060 0.156 0.225 0.302 0.387 9 0.000 0.000 0.000 0.000 0.000 0.002 0.010 0.040 0.075 0.134 0.387 What is the probability that (enter the probabilty only, do not round.) : • Exactly 2 are male? • At least 7 are male? • None are male? • Less than 3 are male? There are 3 or 4 males? • At least 1 is male?
Which of the following statements about geometric mean return is are true: I. Geometric mean return is always less than or equal to arithmetic mean return II. Geometric mean return is used only for grouped data. III. Geometric mean return cannot be a negative number. a. I only d. III only b. I & II c. I & III d. III only
A private college advertised that last year their freshman students, on average, had a score of 1160 on the college entrance exam. Assuming that average refers to the mean, which of the following claims must be true based on this information? Note: More than one statement could be true. If none of the statements is true, mark the appropriate box. 0 Next year at least one of their freshman students will have a score of at least 1160 on the exam. 0 0 0 0 0 Last year some of their freshman students had a score of more than 1420 on the exam. Last year more than half of their freshman students had a score of at least 1160 on the exam. Last year at least one of their freshman students had a score of 1160 or above on the exam. Last year some of their freshman students had a score of exactly 1160 on the exam. None of the above statements are true. Explanation Check X hp © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Access
a. In a classic example the student in an Engineering Mathematics class argue that the volume of water contained in the wiper reservoir of the Mazda Mantis brand of car was not 0.25 liter whilst some of the student said the volume was more. To test the volume of the wiper reservoir of Mazda Mantis, some students with this brand of car brought their cars to the University's mechanical workshop where the volume of the wiper reservoirs were measured by the Mechanical Instructor. The mean was µ = 0.22 and standard deviation o = 0.09. If 25 students brought their cars to the mechanical workshop, what conclusion did they reach at 5% level of significance?
3:29 mylab.pearson.com/S Determine the original set of data. 1012 2 1 447 8 3 3 5 5 5 7 8 4 01 Legend: 110 represents 10 The original set of data is (Use a comma to ||| = VO) 1 22 ... 46 ... - 13% separate answers as needed. Use ascending order.) O + 3 :
Residence in the city are charge for water usage every three months the water bill is computed from a common fee along with the amount of water the customer uses the last water bill for 40 residence from two different neighborhoods are shown in the histogram below. which of the following is a true statement comparing the water bills of the two neighborhoods? more homes on front Street had water bills above 225 then on Pine Road more homes on Pine Road had water bills under 150 then on front Street more homes on Pine Road had water bill is above 200 then on front Street The same number of homes on both streets had water bills between 175 and 200
The weekly salaries (in dollars) for 10 employees of a small business are glven below. (Note that these are already ordered from least to greatest.) 674, 697, 699, 738, 785, 807, 809, 905, 938, 968 Suppose that the $968 salary changes to $1188. Answer the following. (a) What happens to the mean? Oit decreases by $ It increases by S O It stays the same. (b) What happens to the median? It decreases by $ O It increases by $ O It stays the same.
29- In a class there are 35 students studying managerial statistics. The number students is a ___________ variable. a. Discrete variable b. Continuous variable c. Decimal variable d. All
lo.4 Prove or disprove :Arithmetic Mean is greater than Geometric Mean and Geometric Mean is greater than Hormonic Mean
The table gives some information about the delays (in minutes) of 80 flights. Delay (n minutes) Frequency Cumulative frequency 10 - 19 16 16 20 - 29 26 42 30 - 39 23 40 - 49 10 75 50 - 59 5 80 The number of flights which delayed 39 minutes or less than 39 minutes is:65 flights. true false
Q2 ANOVA The following side-by-side box plots show the prices (in thousands) of 48 houses in Corvallis, OR. The houses are divided into age categories: N = New (0-24 years old), M = Medium (25-50 years old), O = Old (50-75 years old), and VO = Very Old (75+ years old). Each category contains 12 randomly selected homes. House Price in Thousands 500- 400- 300 200- 100- Q2.1 M ó Age Category vo TRUE or FALSE: All categories contain at least one outlier. O True O False
Determine the mean value of x for the following: X: 0, 1, 2, 3, 4 P(x): .4, .1, .1, .1, .3

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the empirical rule. (a) between 70 and 90 (b) greater than 95 or less than 65 (c) less than 75 (d) between 85 and 90