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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- In at least 6 sentences discuss the advantages of a uniform distribution and give an example. (come up with your own example.)
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- 1. Left-tail probability Refer to #15 in Ch 13 multiple choice. The interpretation of P (X < 22.62) is as follows: First, let's assume that before collecting data, we, as researchers, have decided that a probability smaller than 5% is “a small probability". Recall that an event with a small probability means "the event is unlikely to happen". (Other probability numbers that are typically considered "small" include 1%, 3%, etc.) Assume that the population mean is 23.4 cm (that's our assumption). If we imagine that we repeat taking all possible samples of size 25 from the population, then only about out of sample means will have values as small as cm or even smaller. In other words, if the population mean is indeed 23.4 cm, the chances that such extremely small sample means would occur by pure chance alone are small (since the probability calculated from #15 is smaller than our threshold of 5%). To put it another way, if the population mean is indeed 23.4 cm, then we would NOT expect a…arrow_forwardPart A of this Question, In general what are the steps to finding the distribution of the Xbar?arrow_forwardq13- We have two sets of movie ratings, set 1 is African movies and set 2 is American movies.An African movie X has a rating of 5.5, and its z-score in set 1 is 0.3.An American movie Y has a rating of 5.7, and its z-score in set 2 is 0.2.Is it true to say, "Relative to their own rating distributions, movie X has a better rating than movie Y"? Select one: True Falsearrow_forward
- 1. Students in a statistics course were asked to Superpower Fly Freeze Time Num of Students answer a variety of questions. One question asked for students to pick a favorite Superpower. Results are listed to the right. 19 11 Invisibility Super strength Telepathy 7 4 a. Create a visual display for these data. 12 b. Describe the distribution of the students' choices.arrow_forward14 of 2 1) Listen A group of children played a balloon dart game at the county fair. The children took turns at the game, and the first 9 players scored 230, 540, 420, 430, 540, 560, 275, 50, 250 Joey is the 10th player, and his score is recorded with the first 9 scores after his turn, If Joey wants his score to be higher than the 70th percentile of all 10 scores, at least how many points does Joey need to score? Enter your answer as a number, like this: 42 GeoGebra Graphing Calculator Next MacBook Air DD F12 F11 F10 吕0 88 F8 F7 F5 F4 F3 F2 F1 %23 $ % 云。arrow_forwardChapter 7: 6. The mean room and board expense per year at a four-year college is $9200. Assume the room and board expenses are normally distributed with a standard deviation of $1200. (6 points each) You randomly select one four-year college. What is the probability that their average room and board is less than $8950? b. You randomly select 50 four-year colleges. What is the probability that the mean average room and board is less than $8950?arrow_forward
- Next question For every football game there is a team that is expected to win by a certain number of arlance, this is called the spread. If point spreads are accurate, we would expect about half of all games played to result in the favored team winning (beating the spread) and about half of all games to result in the team favored to not beat the spread. The accompanying data represent the results of 45 randomly selected games where a 0 indicates the favored team did not beat the spread and a 1 indicates the favored team beat the spread. Do the data suggest that sport books establish accurate spreads? Click the icon to view the spread results. Because npo (1-Po) hypothesis satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? Ho: versus H₁: (Type integers or decimals. Do not round.) Find the sample proportion, p. A p= = Zo = Find the test statistic, Zo. (Round to three decimal places as needed.) 10, the sample size is Find the P-value. (Round…arrow_forward(a) Identify the shape of the distribution, and (b) determine the five-number summary. Assume that each number in the five-number summary is an integer. 10 - y - .. O D. The shape of the distribution cannot be determined from the boxplot. b. The five-number summary is | || ||||arrow_forward
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