ObservedfrequencyfoExpectedfrequencyƒE2(Jo-1)²JEIn a church134Indoors but not in a church6472.000.889Outdoors Total420240 Matrimony Monthly is a magazine that provides information for couples thinking about marriage. Over the years, writers for the magazine have researchedjust about everything there is to research about weddings. The popular conception at the magazine has been that roughly 50% of first weddings take placeindoors in a church, 30% take place indoors in a building other than a church, and 20% take place outdoors. This past week, the magazine examined arandom sample of 240 first weddings and found the distribution given by the first row of numbers in the table below. (This row contains the frequenciesobserved in their sample of 240.) The second row of numbers gives the frequencies expected under the hypothesis that the popular conception at themagazine is correct. The bottom row of numbers contains the following value for each of the wedding location categories.(fo-fE)²JEPart 1(Observed frequency - Expected frequency)²Expected frequencyFill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round yourresponses to three or more decimal places.(fo-ƒE)²JE▷Aa

Given Information: 50% of first weddings take place indoors in a church 30% take place indoors in a…

Answered: just about everything there is to…

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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3. Consider the result of a fictional Statistics final exam taken by 120 students, as given in the following frequency distribution: Grade Less than 50 50 - 59 60 - 69 70 - 79 80 - 89 90 - 100 Frequency 15% 10% 30% 25% 15% 5% How many students received at least a 70 in this exam? A. 54 25 45 D. B.
2. Here are the scores on the first exam in an introductory statistics course for 30 students in one statistics course: 57 59 61 65 68 70 70 73 73 75 75 75 78 80 80 80 82 82 83 85 85 87 90 90 91 92 92 94 94 98 Use these data to make a stemplot. Use the stemplot to describe the distribution of the first-exam scores for this course.
Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify no private The ages of 25 are are respectively. Assuming that the distribution of ages is bell shaped, what percentage of the respondents will be between 64.3 and 93.4 years old? 61 89 65 90 69 92 76 70 73 60 67 75 64 82 68 73 66 76 86 74 62 81 63 68 81 approximately 83.9% approximately 60% O approximately 95% O approximately 81.5%
A researcher asks a sample of people about their attitudes toward marijuana legalization and concludes people have a wide variety of opinions, and are equally likely to be anywhere between strongly in favor of it to strongly opposed to it. She reaches this conclusion because the shape of the distribution is
Like father, like son: In 1906, the statistician Karl Pearson measured the heights of 1078 pairs of fathers and sons. The following table presents a sample of 6 pairs, with height measured in inches, simulated from the distribution specified by Pearson. Father's Son's height height 70.8 69.8 70.7 70.1 73.3 73.6 76.5 65.7 72.4 71.0 Part: 0 / 4 70.9 Send data to Excel Part 1 of 4 69.1 The least-squares regression line y = b + b₁ x = 47.8026+0.3397x and Σ (x-x)² = 36.5350 are known for this data. Use the critical value method to test H₂ :B₁ = 0 versus H₁ :B₁ +0. Can you conclude that the father's height is useful in predicting the son's height? Use the α = 0.01 level of significance. Find the critical value(s). Round the answer to three decimal places. If there is more than one critical value, separate them with commas. Critical value(s): 0,0,...
A reviewer decides to interview viewers to see how they would rate a particular movie. The following table lists the responses from twenty-five viewers. Construct a frequency distribution for the data Movie Ratings Bad Awful Bad Average Good Average Great Good Great Average Great Good Good Good Great Awful Average Great Awful Average Great Bad Good Awful Great
As a promotional gimmick, OHaganBooks.com has been selling copies of Encyclopaedia Galactica at an extremely low price that is changed each week at random in a nationally televised drawing. The following table gives the frequency with which each price will be chosen and summarizes the anticipated sales. Price $5.50 $10 $12 $15 Frequency (weeks) 1 2 3 4 Weekly Sales 6,600 3,900 3,200 1,500 OHaganBooks.com originally paid Duffin House $20 per copy for the Encyclopaedia Galactica. What is the expected weekly loss from sales of the encyclopædia? Loss per copy sold x Number of copies sold.) (Loss -
Given the following frequency distribution, Mid-price of a commodity 15 25 35 45 55 Number of items sold 27 A 28 B 19 (a) If 75% of the items were sold in birr 45 or less and most items were sold in birr 34,find the missing frequencies.(b) If 25% of the items were sold in greater than or equal to birr 45 and most itemswere sold in birr 34, find the missing frequencies.
Matrimony Monthly is a top-selling magazine that provides information for couples thinking about marriage. Over the years, writers for the magazine have researched just about everything there is to research about weddings. The popular conception at the magazine has been that roughly 50% of first weddings take place indoors in a church, 30% take place indoors in a building other than a church, and 20% take place outdoors This past week, the magazine examined a random sample of 240 first weddings and found the distribution given by the first row of numbers in the table below. (This row contains the frequencies observed in their sample of 240.) The second row of numbers gives the frequencies expected under the hypothesis that the popular conception at the magazine is correct. The bottom row of numbers contains the following value fo each of the wedding location categories. (Observed frequency - Expected frequency ) fE Expected frequency Part 1 Fill in the missing values in the table.…
A recent Gallup Poll interviewed a random sample of 1523 adults. Of these, 868 bought a lottery tickets in the past year. Suppose that in fact (unknown to Gallup) exactly 60% of all adults bought a lottery ticket in the past year. If Gallup took many simple random samples of 1,523 people, the sample proportion who bought a ticket would vary from sample to sample. The sampling distribution would be close to normal with a mean of 0.6 and a standard deviation of___ A)0.4899 B)0.0251 C)0.00016 D)0.0126
A financial analyst is examining the relationship between stock prices and earnings per share. She chooses fifteen publicly traded companies at random and records for each the company's current stock price and the company's earnings per share reported for the previous year. Her data are given below, with x denoting the earnings per share from the previous year and y denoting the current stock price (both in dollars). A scatter plot of her data is shown in Figure 1.

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