The National Academy of Science reported that 36% of research in mathematics is published by US authors. The mathematics chairperson of a prestigious university wishes to test the claim that this percentage is no longer 36%. He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 278 recent articles published by reputable mathematics research journals and finds that 85 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 36%? Use a 0.02 level of significance.   Step 2 of 3 :   Compute the value of the test statistic. Round your answer to two decimal places.

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: According to a Harvard Health Publishing article, the normal body temperature may be  lower than…

A:

Q: Gallup is a polling company that aims to make predictions about American opinions.  From August…

A: The statistic is a function of sample values only. And parameter is based on population values.…

Q: A developmental psychologist would like to determine how much fine motor skill improves for children…

A: Given Information : A developmental psychologist would like to determine how much fine motor skill…

Q: How many patients would need to be sampled to estimate the difference in means to within 26 days…

A: ANSWER:-

Q: Food survey data all wrong?" This was the headline of a newspaper article on a report from the from…

A: Solution

Q: A consumer protection group regularly monitors gas prices in southern California.  One day (several…

A: 3.95 4.07 4.14 4.04 4 3.93 3.98 4.01 3.9 4.03 4.13 3.88 4.03 4.1 3.81…

Q: Would you expect the correlation between High School GPA and College GPA to be higher when taken…

A: The correlation shows the relationship between 2 variables.

Q: Refer to a study of the factors that lead to successful performance-based logistics projects. Recall…

A: Given information: The data for the experience for the 5 commercial suppliers is given.

Q: Of the 5000 surveys, 14 % were returned. This response rate (Round to the nearest whole number as…

A: Given that a survey was attempted on 5000 people belonging to an otology online group. In 717…

Q: Fewer young people are driving. In year A, 64.9% of people under 20 years old who were eligible had…

A: You may need to use the appropriate appendix table or technology to answer this question.Fewer young…

Q: 1. Scientists want to know whether people who exercise with music have a greater increase, on…

A: Given 2 methods to determine whether people who exercise with music have a greater increase, on…

Q: A press release states that "by an overwhelming margin, Americans want to live in a sunny place."…

A: a) Define that p is the proportion of all adult Americans who would prefer to live in a hot climate…

Q: The XYZ company wants to see if interview scores predict job performance scores. So it goes back…

A: The claim is to check whether there is a relationship between employee interview scores and employee…

Q: The researchers hypothesized that there would be a correlation between how much people studied and…

A: Solution: From the given information, the researchers hypothesized that there would be a correlation…

Q: An SMR over 100% ( i.e.,171 %) indicates that the "healthy worker effect" may be an issue in the…

A: Given::- An SMR over 100% (i.e., 171%) indicates that the "healthy worker effect" may be an issue in…

Q: Suppose that, for one semester, you can collect the following data on a random sample of college…

A: Given information: For one semester, the data was collected from a random sample of college juniors…

Q: The Weather Channel (TWC) is one of the most popular cable TV networks. Who hasn't seen Jim Cantore…

A: Hypothesis:  H0: p1=p2H1 :p1≠p2 n1=1000,  x1=446 p1=4461000 = 0.446 n2=1500,  x2=303 p2=3031500 =…

Q: Suppose that a recent report from the Current Population Survey (CPS) of the United States Census…

A: The question is about hypo. testing Given : Null and alt. hypo : H0 : p = 0.46 H1 : p > 0.46…

Q: You may need to use the appropriate appendix table or technology to answer this question. Fewer…

A: For the year A, sample proportion: sample size: For the year B, sample proportion: sample size:

Q: Suppose the observational units in a study are the patients arriving at an emergency room on a given…

A: Solution

Q: The department of education ran a very comprehensive study in the 1990's to determine the GPA of…

A: Hi, since the problem posted by you contains multiple sub-parts, we are answering the first three…

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: Step 1: It is Hyopthesis test for difference between two population proportions  population…

Q: Social networking is becoming more and more popular around the world. Pew Research Center used a…

A: Introduction: Denote p1, p2, p3, and p4 as the true proportions of adults using social networking…

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: After reading an article using research done by the Organization for Economic Co-operation and…

A: The 95% confidence interval for p is (0.25, 0.32).

Q: The Pew Research Center asked a random sample of 2024 adult cell-phone owners from the United States…

A: The question is about probability Given :   To find : Prob. that a randomly selected person is…

Q: 2.Are babies born to mothers who use assistive reproduction technology (ART) more likely to be born…

A: Chi-Square Test of independence: The hypothesis testing for the independence is calculated with the…

Q: A study of US residents is conducted to assess the relationship between gender and if they have…

A: Test is that whether there is relationship between gender and if they have cardiomyopathy.

Q: Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by…

A: Given : sample size = n = 1000 x = 650 p^ = xn   = 6501000   = 0.65

Q: In 2016, the Honors College at a large state university claimed that the average GPA of its…

A: The hypotheses are; H0: M ≥ 3.80 Ha: M < 3.80 This is a lower-tailed test.

Q: A professor found out from a senior professor that engineering students in Harp University tend to…

A: Given information: μ=1.50x¯=1.35s=0.50n=9α=0.10

Q: Part 1 Fill in the missing values in the table. Round your responses for the expected frequencies to…

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

Q: t is traditionally believed in the literature on bird migration that godwits that migrate between…

A: Given information, A study of godwits are now traveling a shorter mean distance non-stop is…

Q: 1. The Brazilian Forest Service (Servico Florestal Brasileiro, SFB) is faced with the need to…

A: Given that: p1=86%=0.86=Proportion of Brazilians from one state are Amazonas support n1=300…

Q: You may need to use the appropriate appendix table or technology to answer this question Fewer young…

A: In year A, 61.9% of people under 20 years who were eligible had a driver's license.In year B, 49.7%…

Q: Hormal Bone Osteopenia | Osteoporosis 1200 1000 890 1000 1100 650 980 700 1100 900 800 900 750 500…

A: One way ANOVA : One-Way ANOVA ("analysis of variance") examines the suggests that of 2 or a lot of…

Q: The researcher believes that happy workers are more productive workers. So he administers a job…

A: It is given that the researcher believes that happy workers are more productive workers.

Q: Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by…

A: Given : The number of adults who said yes = 650

Q: A report described teens' attitudes about traditional media, such as TV, movies, and newspapers. In…

A: Two sample proportion z test needs to be computed using SALT.

Q: An issue of Time Style and Design reported on a poll conducted on the shopping habits of wealthy…

A: Given data number of success , x= 410.0 sample size, n = 603 population…