It has been claimed that 30% of students in a particular school dislike mathematics. When a survey was conducted, it showed that 153 of 600 students dislike mathematics. Test if the claims is too high at 0.5 level of significance.
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A: The hypothesized mean is 140.
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A:
Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…
A: Given information Sample size(n) = 35 Sample mean = 58 Standard error = 3.2 Significance level (α) =…
Q: Please help with the last part of this question finding the test statistic. A study was conducted to…
A: Given n1=312 X1=63 n2=300 X2=12
Q: Professors collected data consisting of eye color and gender of statistics students. Among 950 male…
A: Given that, For males: X1= 372 and sample size n1= 950 p1^ = X1/n1 = 372/950 =0.3916 For females:…
Q: Suppose that you wanted to buy a new Honda Civic and you want to wait until you can get a good deal.…
A: According to the given information in this questionWe need to find the value of the test statistic
Q: Kimberly and Alexis began arguing about who did better on their tests, but they couldn't decide who…
A: Given data,For mathμ=76.8σ=9.9Kimberly score is X=76.4For Socialμ=62.6σ=9Alexis score is X=63.2
Q: In 2011, a U.S. Census report determined that 65% of college students are working students. A…
A: 1. Determine the test statisticz = -0.58 2. Find the p-valueP-value = 0.5615 Explanation:Step 1:…
Q: Most adults would erase all of their personal information online if they could. A software firm…
A:
Q: Among 2897 female atom bomb survivors, 1332 developed thyroid diseases. Among 1212 male atom bomb…
A: The number of female atom bomb survivors The number of female survivors of thyroid diseases The…
Q: new soft drink is being market tested. A sample of 356 individuals participated in the taste test…
A: Formula : Test statistic :
Q: Jacy and Bella began arguing about who did better on their tests, but they couldn't decide who did…
A: GivenJacy took a test in Math and earned a 78.2 Bella took a test in social studies and earned a…
Q: A business travel magazine wants to classify airports on a variety of service variables on a 0-10…
A:
Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35…
A:
Q: A business travel magazine wants to classify airports on a variety of service variables on a 0-10…
A:
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A: From the given information, the hypothesized mean is 148.
Q: Angela and Carissa began arguing about who did better on their tests, but they couldn't decide who…
A:
Q: World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are…
A: Population mean=1148Sample mean=144Standard deviation =25 We have to finda...Null and Alternative…
Q: What are the null hypothesis ( H0 ) and the alternative hypothesis ( H1 ) that should be used for…
A: a) null Hypothesis H0 - μ =145 Alternate Hypothesis H1 - μ <> 145 (μ not equal to 145) b)…
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28
Q: A psychologist hypothesizes that the children with type-K personality score higher than the children…
A: According to the provided information, the objective of the question is whether the children with…
Q: A marketing survey involves product recognition in New York and California. Of 37 New Yorkers…
A: In a survey in New York and California, 37 out of 197 knew the product in New York 99 out of 305…
Q: Suppose a professor wants to know if students in her statistics class have a good grasp of basic…
A: Given: Sample size n=6 Sample mean x¯=∑i=1nXin=62+92+75+68+83+956=79.167 Sample standard deviation…
Q: Nina and Amy began arguing about who did better on their tests, but they couldn't decide who did…
A: Given: All the student’s test grades in the English All the student’s test grades in the Society…
Q: (a) What are the null hypothesis H. and the alternative hypothesis H, that should be used for μ the…
A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A: Given data Hypothesized mean = 142 Population Standard deviation = 25 Sample size n = 100…
Q: An executive for a large company is considering a change to health insurance plans offered to the…
A: An executive for a large company is considering a change to health insurance plans offered to the…
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A: Given that Suppose the true mean score among the general population on the subsection is 14. Fill…
Q: Rahquez and Jonah began arguing about who did better on their tests, but they couldn't decide who…
A: Rahquez took a test in Social Studies and earned a 78Jonah took a test in Math and earned a 70.4The…
Q: Juwan and Aaron began arguing about who did better on their tests, but they couldn't decide who did…
A:
Q: The mean amount of money last year spent by customers at the Texas Roadhouse in Cedar Falls, Iowa…
A: Given : The mean amount of money last year spent by customers at the Texas Roadhouse in Cedar Falls,…
Q: Most adults would erase all of their personal information online if they could. A software firm…
A:
Q: A psychologist has designed an index to measure the social perspectives of elementary school…
A:
Q: The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest…
A: Define:Sample 1: The SAT math test scores for students whose parents are college graduates with a…
Q: You are hired to study the statistical relationship between the number of trees and the number of…
A: From the above given data the following solution is provided below
Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…
A: State the given values. Now, we know that
Q: According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher…
A: Given that According to the most recent General Social Survey, 70% of adults watch TV nightly.…
Q: In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in…
A: Given that, x=634,n=1039 The sample proportion is,
It has been claimed that 30% of students in a particular school dislike mathematics. When a survey was conducted, it showed that 153 of 600 students dislike mathematics. Test if the claims is too high at 0.5 level of significance.
Step by step
Solved in 2 steps
- A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with a very limited chance for consequences. The students rated their desire to cheat on a scale ranging from 1-100, with lower numbers indicating less desire to cheat. Before opening the data, what would you hypothesize about this research question? Open the data set. Before running any statistical analyses, glance through the data. Do you think that your hypothesis will be supported? Conduct descriptive analyses and report them here. Conduct a one-way ANOVA. Report your statistical findings (including any applicable tables in APA format) here. What would you conclude from this analysis? What would be your next steps, if this…The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads 485 487 518 517 650 542 570 426 566 499 588 562 497 448 592 453 High School Grads 442 492 580 478 479 425 486 485 528 390 524 535 (b) What is the point estimate of the difference between the means for the two populations? (c) Find the value of the test statistic. (Round your answer…A researcher gathered a sample of participants who volunteered for a studying of phobias. She measured anxiety level of participants as they viewed photos of spiders and again when they viewed puppies. Which statistical test is appropriate for this study and why?
- According to the latest research 91% of people are right handed. In a sample of 120 people, what is the mean of the number of right number of right handed people?Suppose that you wanted to buy a new Honda Civic and you want to wait until you can get a good deal. You want to see if the usual/average price of a Honda Civic is below the blue book value of $21,550. You are unsure that the prices of the current listings around you are lower than the blue book value of a Honda Civic so you randomly sample 49 listings from the area and find their sample mean selling price is $20,015 and their sample standard deviation is $1750.A long-term study followed 128 women throughout their lifetime. Among thevarious data collected, one interesting result was that 35 of these women hadsuffered from a migraine at some point in their life Use the results of this study to test the claim that the percentage(proportion) of women in the population that will suffer from a migraine isless than 35% in their lifetime. Use 0.05 significance level. Use symbolsand words to express your answer.
- One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. After taking the test and seeing your score for this subsection, you're interested in the mean score, μ , among the general population on this subsection. The website reports that μ is 148 , but you believe that μ is greater than 148 . You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 152 and that the standard deviation of their scores is 28 . Based on this information, answer the questions below. What are the null hypothesis ( H0 ) and the alternative hypothesis ( H1 ) that should be used for the test? H0 : μ is H1 : μ is In the context of this test, what is a Type I error?A Type I error is the hypothesis that μ is when, in fact, μ is .Suppose that you decide not to…The admisnistrators of Rowan university wants to know more about the knowledge of students regarding international events. They are concerned that their students are uninformed with regards to the news from other countries. When a standardized test is used to assess the knowledge of all students at al US universities about world events, it is reported that the national mean. A sample of 35 students from Rowan university are tested and the sample mean is 58 and the standard error is 3.2. The 99 percent confidence interval of population mean knowledge of the students at Rowan university has to be determined. 6. The 99 percent confidence interval of the population mean knowledge of the students at Rowan university based on this sample data is?Logan and Brian began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Logan took a test in Art History and earned a 76.8, and Brian took a test in English and earned a 68.9. Use the fact that all the students' test grades in the Art History class had a mean of 71.9 and a standard deviation of 11.6, and all the students' test grades in English had a mean of 61 and a standard deviation of 9.4 to answer the following questions.a) Calculate the z-score for Logan's test grade.z=z= [Round your answer to two decimal places.] b) Calculate the z-score for Brian's test grade.z=z= [Round your answer to two decimal places.]c) Which person did relatively better? Logan Brian They did equally well.
- Suppose that Kim is a participant in a study that compares several coaching methods to see how they affect math Scholar Aptitude Test (SAT) scores. The grand mean of math SAT scores for all participants (My) in the study is 550. The group that Kim participated in had a mean math SAT score of 565. Kim’s individual score on the math SAT was 610. What was the estimate residual component (of Kim’s score, that is, the part of Kim’s score that was not related to the coaching method? (Both parts of this question call for specific numerical values as answers). What was that “effect” (ai) component of Kim's score? What pattern in grouped data would make SSwithin = 0? What pattern within data would make SSbetween = 0?One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ , among the general population on this subsection. The website reports that μ is 145, but you have good reason to believe that μ is less than 145. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 139 and that the standard deviation of their scores is 28. Based on this information, complete the parts below. (a) What are the null hypothesis H0 and the alternative hypothesis H1that should be used for the test? H0: H1: (b) Suppose that you decide to reject the null hypothesis. What sort of error might you be making? ▼(Choose one) (c) Suppose the true mean score among the general population on the subsection is 136. Fill in the blanks to describe a Type II error. A Type II error…The admisnistrators of Rowan university wants to know more about the knowledge of students regarding international events. They are concerned that their students are uninformed with regards to the news from other countries. When a standardized test is used to assess the knowledge of all students at al US universities about world events, it is reported that the national mean. A sample of 35 students from Rowan university are tested and the sample mean is 58 and the standard error is 3.2. The 99 percent confidence interval of population mean knowledge of the students at Rowan university has to be determined. 8. The variance of the national accounting examination score is 900. We want to estimate the sample mean score within 5 points of the population mean score with 99% confidence. The sample size of examinees that will be surveyed to meet these conditions is?