24. In a random sample of the 500 persons fromMaharashtra, 200 are found to be consumers of vegetable oil. Inanother sample of 400 persons from Gujrat, 200 are found to beconsumers of vegetable oil. Discuss whether the data reveal a signi-ficant difference between Maharashtra and Gujarat so far as the pro-portion of vegetable oil consumers is concerned.

Answered: Image /qna-images/answer/d6a6cb9a-096e-4946-9a6c-c4319edfff65.jpg

Answered: In a random sample of the 500 persons…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 7CR

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What is a sample space?
6. In March 2010, the Pew Research Group surveyed 1708 adults Americans and asked, "Do you believe the USA was right or wrong to in using military force against Iraq?" Of the 1708 adults surveyed, 1186 stated the USA made the correct decision. In January of 2020, the Pew Research group asked the same question to 1375 adult Americans and found that 934 still share the same opinion that military force was correct. Is there significant evidence to support the claim that this proportion is lower now than it was in 2010? Use alpha = 0.05 a. Set up the Hypotheses and indicate the claim H0: Ha: b. Decision rule. please show the rejected region c. Computation d. Decision e. Interpretation
The scores of a random sample of 8 students on a physics test are as follows: 60, 62, 67, 69, 70, 72, 75, and 78. a) Test to see if the sample mean is significantly different from 65 at the 0.05 level. Report the t and p values. b) The researcher realizes that she accidentally recorded the score that should have been 76 as 67. Are these corrected scores significantly different from 65 at the 0.05 level?
5. A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a. Based on this poll, the percent of homes with a landline is between what two values? b. Based on this poll, can we conclude that a majority of homes don't have a landline?
1. A graduate student asks 500 female students whether they have experienced any sexual harass- ment on campus. Each student is asked to estimate the frequency of these incidents as either "often, sometimes, rarely, or never." The researcher also gathers data on age and major to see whether there connection between these variables and fre is any quency of sexual harassment. oment div nt
A supplier says that the length of a component it produces is on average 20 cm. In order to test the accuracy of this discourse, 6 pieces of the products sent by the supplier were randomly selected and their lengths were measured (data: 19,2; 18,4; 19,8; 20,2; 20,4; 19). According to these measurements, which of the following is the test statistic that will be used to test the accuracy of the supplier's discourse at the significance level of 0.1 under the assumption that the distribution of the mass is normal?Answer options group A) -5.84 B) -2.55 C)-1.60 D)- 3,40
2. The principal of a high school wants to know how long his students spend doing homework at night on average. He wishes to take a random sample of 60 students and record the number of hours spent on homework per night. Define the population, sample, parameter, and statistic. b) ' Is the variable of interest qualitative or quantitative? c) The receptionist suggests asking the first 60 students to enter the school library. Why might the principal not want to choose this type of sample? d) Name a better sampling method the principal could use. Describe how this sample could be collected. e) The principal has decided to plot the results using a graph. Name an appropriate graph he could use to visualize the data.
A reporter writing for a national newspaper claimed that representatives of school districts were falsely reporting their students’ performance on standardized tests. Over 90% of the nation’s school districts report that their students are performing above the national average, and the reporter claimed that isn’t possible. It is possible. a) Provide a list of 10 numbers for which 90% are above the mean. b) What can you infer about the nation’s school districts if 90% of them really are performing above the national average?
If the mean of population A is significantly different from 20, but the mean of group B is not significantly different from 20, then the mean of the two population are different from one another. A) True B) False
Find the preferred measure of central location of the sample whose observations are 18, 10, 11, 98, 22, 15, 11, 25 and 17 represent the number of automobiles sold during this past January by 9 different automobile agencies. Justify your answer.
University of Nizwa graduate school is creating a graduate student recruiting brochure and wants to include an 1 estimate of the average monthly housing cost for a graduate student at UoN. From a list of the 150 current graduate students, a SRS of 10 students is selected and their monthly housing costs are recorded ?What is the target population.1 All UoN graduate studentsO The 10 UON graduate studentsO The monthly housing costsO Cannot be determine from the information givenO PWhat is the sampling frame.2 List of all 150 graduate studentsO List of all 10 graduate studentsO List of the graduate students housing costO Cannot be determine from the information givenO PWhat is the type of Sampling method used 3 Probability Sampling Non-probability Sampling Quota Sampling O Cannot be dete the information given
3. A researcher wants to estimate the average academic performance in Mathematics of grade 10 - Mabuhay in a certain school. The researcher determined their grades in Mathematics among the 7 participants of the study. The grades are as follows 79, 80, 89, 87, 85, 88, 83. Estimate the average and variance of academic performance in Mathematics of grade 10- Mabuhay.

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