In one experiment, we want to evaluate the performance of the contestants of an International Geometry Olympiad. We randomly select a group of 19Xcontestants from different categories. The points (out of 100) of the contestants are given in the table below.Points (out of 100)20 - 3030 - 4040 - 5050 - 6060 - 7070 - 8080 - 9090 - 100Number of contestantsX-2X/32X+14118X10a. Compute the average points.Answer in exact fraction, or rounded to at least 4 decimal placespointsb. Compute the median points.Answer in exact fraction, or rounded to at least 4 decimal places.pointsc. Determine the standard deviation value of the points distribution.Answer in exact fraction, or rounded to at least 4 decimal places.d. Find the Pearson's Coefficient of Skewness using the relation between Mean, Median and Standard Deviation.Answer in exact fraction, or rounded to at least 4 decimal places.

Mean - Mean is the average of all data points available. It is defined as sum of all the data points…

Answered: In one experiment, we want to evaluate…

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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The lifetimes (in months) of two types of lightbulbs are independent Exponential variables with means 1/1.50 and 1/0.55 respectively. Part a) Consider the total lifetime of the two bulbs used consecutively in a light fitting, so that when the first bulb expires it is immediately replaced by one of the second type. Evaluate the density function of this variable at the point 2.48, giving your answer to two decimal places. -1.169 Part b) If the mean lifetimes were equal, the total lifetime in (a) follows which type of distribution? A. Exponential B. Poisson C. Gamma OD. Normal OE. Uniform
A researcher randomly selects 95 high school students and asks their handwriting preference and how well they dance. The two-way table displays the data. Suppose one of the students is randomly selected. Let B = the student prefers writing in block letters and F = the student’s dancing skills are fair. Which of the following is the correct value and interpretation of P(B|F)? P(B|F) = 0.37; given that the student has fair dancing skills, there is a 0.37 probability that they prefer to write with block letters. P(B|F) = 0.37; given that the student prefers to write with block letters, there is a 0.37 probability that they have fair dancing skills. P(B|F) = 0.45; given that the student has fair dancing skills, there is a 0.45 probability that they prefer to write with block letters. P(B|F) = 0.45; given that the student prefers to write with block letters, there is a 0.45 probability that they have fair dancing skills.
4.2.55 Question Help A committee consists of five executives, three women and two men. Their names are Christine (C), Barry (B), Francisca (F), Trevor (T), and Olivia (0). The committee needs to select a chairperson and a secretary. It decides to make the selection randomly by drawing straws. The person getting the longest straw will be appointed chairperson, and the one getting the shortest straw will be appointed secretary. The possible outcomes are shown in the accompanying table. Here, for example, CF represents the outcome that Christine (C) is appointed chairperson and Francisca (F) is appointed secretary. List the outcomes constituting each of the four events below. Click the icon to view the outcomes of the committee selections. Event E, is defined as the event a male is appointed chairperson. What outcomes constitute event E, ? О А. СВ, СТ, FB, FT, ОB, ОТ, ВС, BF, ВО, ВТ, тс, TF, ТО, ТВ В. ТС, TF, ТО, ТВ C. CF, CO, CB, FC, FO, FB, OC, OF, OB D. BC, BF, BO, вт Outcomes of…
13 14 15 16 17 18 19 (a) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a systematic sample of plants? The botanist takes a list of the plants and selects every 3" plant until 78 plants are selected. The botanist forms groups of 13 plants based on the heights of the plants. Then, he randomly chooses 6 groups and selects all of the plants in these groups. All of the plants that are in one particular room at the nursery are easily accessible. So, the botanist selects the 78 plants in this particular room. (b) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a random sample of attendees? The organizers select the first 60 attendees who register for the conference because these attendees are easily accessible. The organizers take a list of the attendees and select every 6" attendee until 60 attendees are selected. The organizers assign each…
Group A is a sample of 15 people Group B is a sample of 15 people What are the degrees of freedom in group A?
Suppose a study investigated the effects of exercise and daily stretching to see how blood pressure was affected. 240 women volunteered to take part in the study. In the study, participants were randomly assigned to one of 3 different exercises plans (Plan A, Plan B, or Plan C) and they were randomly assigned to one of 2 different stretching plans (Plan 1 or Plan 2). a. Identify the subjects. b. Identify the factor(s) and number of level(s) for each. How many treatment groups are there?
Excel: Lakeland Case (goodness of fit test)Lakeland Homes manufactures four models of prefabricated homes, a two-storycolonial, a log cabin, a split-level, and an A-frame. To help in production planning,management would like to determine if previous customer purchases indicate thatthere is a preference in the style selected. The number of homes sold of each model for100 sales over the past two years is shown below. Model Colonial Log Split-Level A-Frame# Sold 30 25 30 15Based on significance level of  = 0.05, provide a formal hypothesis test to analyzewhether there exist preferences for different home styles.
2. Please answer all three parts of this question. 1. You are designing a 2x3 factorial design and need 20 participants in each of 6 conditions. How many participants in total would be needed for a 2x3 independent groups (between-subjects) design? How many participants in total would be needed for a 2x3 repeated-measure groups (within-subjects) design? How many participants in total would be needed for a 2x3 mixed factorial design?
What are the factors in a factorial design? A. The independent variables B. The experimental variables C. The organismic variables D. The dependent variables
Hi, could you help me with this question? Thank you!
A 2 X 3 factorial design has two variables that divide the groups. six variables that divide the groups. hree variables that divide the groups. "could be any of the above, depending on the number of measured variables"

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