Chapter: NORMAL AND SAMPLING DISTRIBUTIONS 3. Let X be a binomial random variable with n = 100 and p = 0.6. Approximate thefollowing probabilities using the normal distribution.a) P(X=65)b) P(X ≤70)c) P(X> 50)4. The time required to complete an interview is approximately normal distributed with amean of 12 minutes and a standard deviation of 1.5 minutes. For a particular interview,calculate the probability that it will takea) at least 14 minutesb) at least 8 minutesc) not more than 10 minutesd) more than 10 minutes and less than 15 minutes1

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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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"In a normal distribution curve, a greater standard deviation would ________." "result in a taller, skinnier curve" "result in a shorter, flatter curve" result in a greater mean not be considered a standard normal curve
Question * Measurements for the length and width of a rectangular plastic covers for CDs are rounded to the nearest mm (so they are discrete). Let X denote the length and Y denote the width. The possible values of X are 129, 130, and 131 mm. The possible values of Y are 15 and 16 mm. The joint distribution is given by the following table: X-length 129 130 131 Y=width 15 0.12 0 42 006 16 0.08 0.28 0011 The probability that a CD cover has length of 129 mm knowing that it has a widtlh of 16 mim is 0.2 0.08 0.4 O 0.13
Topic: Skewness and Kurtosis Platykurtic – Compared to a normal distribution, its tails are shorter and thinner, and often its central peak is lower and broader. (? < 3) Question: Is 2.99 considered as a Platykurtic?
Mm6
Group 1: 0,0,0,0,1,1,2,2,3 For a standard deviation of 1.118, convert all of group 1 scores into Z-scores. *Use All of Appendix Table A-1 as a reference
A2 Consider the following summary statistics: (i) The sample mean. (ii) The sample standard deviation. (iii) The first quartile. (iv) The sample variance. (v) The interquartile range. Which of these statistics are measures for the spread of a sample? A: (i), (ii), and (v) B: (i) and (ii) C: (ii), (iv), and (v) E: (iii) and (v) Circle the correct letter: A B с D E D: (iii) and (iv)
Analysis of Variance Use the graph attached below. In this assignment we are interpreting statistics. Questions for each graph: 1.) ANOVA: Is the overaall trst signficant? 2.)Multiple Comparisons: To know which group are different from another, we need to examine the results from the post hoc test analysis? 3.)Discriptives: Discuss final results using APA format. In addition to referring to information from the previous two tables, you will need to incorporate information from the third table
- (a) Define with examples: ungrouped data, grouped data, mean, standard deviation, median, histogram, frequency polygon, and ogive. (b) Determine 31" percentile, 3rd decile, and 2d quartile for the following observations. {6, 12, 18, 12, 13, 8, 13, 10, 11, 16, 13, 11, 10, 2, Ļ0, 14} (c) Suppose that you have five 10 km segments to your automobile trip. You drive the car: 100 km/hr for the first 10 km; 110 km/hr for the second 10 km; 90 km/hr for the
The term observed frequency refers to____ the frequencies that are hypothesized for population being examined the frequency found in the population being examined the frequency found in the sample data
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steam and leaf of data leaf unit= 10 2 2 59 5 3 234 13 3 55779999 (**) 4 0001233 14 4 5569 *** 5 03344 5 5 7788 1 6 1 A) what is the range of the distribution. b) what is the valve of the sample size c)what is the median
Which measure of central tendency can be used to describe a distribution at any level of measurement (nominal, ordinal, or interval)? standard deviation median mean mode

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3. Let X be a binomial random variable with n = 100 and p = 0.6. Approximate the following probabilities using the normal distribution. a) P(X=65) b) P(X ≤ 70) c) P(X> 50)