social scientist sampled 140 people and classified them according to income level and whether or not they played the lottery (LOTTO) in the last month. The sample information is reported below. Is it reasonable to conclude that playing the lottery is related to income level? Use the .05 significance level.   INCOME   LOW MIDDLE HIGH TOTAL PLAYED 46 48 21 115 DID NOT PLAY 14 12 1

Q: A fitness trainer is interested in investigating whether ethnicity and the first exercise activity…

A: ANOVA: The analysis of variance (ANOVA) is used to determine whether there are any statistically…

Q: Since t is -2,861 in a two-way hypothesis test, which of the following is the sample size and…

A: Since t is 2.861 in a two-way hypothesis test, which of the following is the sample size and…

Q: n HR manager in a company wants to know if there’s a difference in the amount of time workers in…

A: The hypothesis can be constructed as:

Q: CHI-SQUARE: 1. A record company wanted to survey its customers regarding music preferences. A random…

A: Step 2:   Determine the level of significance.   The level of significance(α) is stated from the…

Q: (a) What is the level of significance? State the null and alternate hypotheses. H0: Age…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks   We need to…

Q: The following table reported the results of a survey on how members would prefer to receive ballots…

A: It is needed to check, whether there is association between gender and preference.   The null and…

Q: In a study of 800 randomly selected medical malpractice​ lawsuits, it was found that 515 of them…

A: Givensample size(n)=800No.of found dropped or dismissed(x)=515p^=xn=515800=0.6438α=0.05

Q: In a survey conducted amongst a random sample of 180 customers, the following shopping frequencies…

A: The manager of a large supermarket in Polokwane believes that 25% of their customers shop for…

Q: 2) A department store, A, has four competitors: B, C, D, and E. Store A hires a consultant to…

A: i) Hypotheses: The null hypothesis is: H0­ : The proportion are really same. ii) The alternative…

Q: Ten randomly selected people took an IQ test A, and next day they took a very similar IQ test B.…

A: There are two dependent samples which are test A and test B. We have to test whether people who…

Q: adioShack reported that they sell 21% of all home computers. a) is this claim supported at the 1%…

A:

Q: de reading level. An English teacher believes that the true figure is higher and with the help of an…

A: Given: Reading grade level (x) Number of pages (f) 5 6 6 10 7 4 8 2 9 2 10 1

Q: A university wanted to see whether there was a significant difference in age between its day staff…

A: Let μ1 denotes the population mean age of day shift members, and μ2 denotes the population mean age…

Q: A study is conducted to determine if bus ridership in a large city is higher during the afternoon…

A: Whenever we want to study the difference between the variables of same subject before conducting an…

Q: In professional basketball games, the fans of the home team always try to distract free throw…

A: (a) State the hypotheses. That is, there is no evidence to conclude that there exists a home…

Q: A local news survey asked 500 randomly sampled people about which shipping carrier they prefer to…

A:

Q: In a study of 783 randomly selected medical malpractice lawsuits, it was found that 489 of them were…

A:

Q: A researcher is interested in investigating whether religious affiliation and the brand of sneakers…

A: Given the data of a brand of sneakers that people wear and their religious affliation as shown…

Q: 4. A lithium battery company claims that the lifetime of a type of battery that it manufactures is…

A: Given data for the lifetime of 24 of the company's batteries : Count, N: 24 Sum, Σx: 6106…

Q: An article reported the following frequencies with which ethnic characters appeared in recorded…

A: Given info: The data shows the ethnic characteristics recorded by the television commercials. In…

Q: Based on the following sample of skittles, create a hypothesis based on the color distribution and…

A: State the null and alternative hypotheses: The researcher is specially interested to determine…

Q: The following table shows age distribution and location of a random sample of 166 buffalo in a…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: You are interested in investigating whether gender and major are associated at your college. The…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: An exercise science student believes that during professional rugby games the average distance…

A: Provided that : When reviewing game statistics the student found that the average distance covered…

Q: You are interested in investigating whether gender and major are associated at your college. The…

A: c) Test Statistic of Independence test TS=∑…

Q: A company that produces snack foods uses a machine to package 454g bags of pretzels.  The hypotheses…

A:

Q: In a study of 778 randomly selected medical malpractice​ lawsuits, it was found that 488 of them…

A:

Q: You are interested in investigating whether gender and major are associated at your college. The…

A: From the given information, Consider, the survey table is-   Math Arts Business other Men 70…

Q: A student wants to see if the number of times a book has been checked out of the library in the past…

A: The correlation coefficient: r=cov(x,y)σxσy=∑i=115(x-x¯)(y-y¯)/nσxσy=538.20*53.1=0.1217 The equation…

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: We have given that the hypothetical proportion p0=0.47, sample size 1002 and favourable cases X =…

Q: b) The table below shows the color and the model of cars purchased by 160 randomly selected…

A: Given that -

Q: In a study of 811 randomly selected medical malpractice lawsuits, it was found that 470 of them were…

A: Givenn=811x=470p^=xn=470811=0.5795α=0.01

Q: Q1 A food services manager for a baseball park wants to know if there is a relationship between…

A: We want to test the hypothesis at significance level of 5%

Q: A social psychologist records the number of outbursts among students at two schools. Assuming the…

A: Given :  The number of outbursts among students at the small school (M = 3) was significantly less…

Q: 4. The gas mileage of three different cars based on random samples are shown in the table below.…

A: The question is based on ANOVA Given : To test : Whether there is diff. in gas mileage between 3…

Q: 2) Researchers want to know if people who use a larger bowl will serve themselves more ice cream. At…

A: Note: Hey there! Thank you for the question. We have used TI-83 calculator to solve the problem.

Q: A university wanted to see whether there was a significant difference in age between its day staff…

A:

Q: Consider the first sample to be the sample of occupants not wearing seat belts and the second sample…

A: To conclude the claim of indifference between the "proportion of occupants killed wearing the seat…

Q: According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft,…

A: As per guideline expert have to answer first question three subparts only dear student please upload…

Q: mpany that TV network A garnered 31% audience satisfaction. To test the claim, TV network A…

A:

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: "Hi! Thank you for the question! Since the question contains four subparts and we are allowed to…

Q: Consider a sample of 45 football games, where 25 of them were won by the home team, Use a 0.05…

A:

Q: Create a hypothesis based on the following Skittles data and conduct a hypothesis test for the…

A: Given Information: To test for the proportion of colours in each box. Significance level α=0.05…

Q: The coach of a basketball team thinks the referee is using a weighted coin to decide which team gets…

A: The chi-square test is performed to find whether there is any difference between the observed…

Q: A study is conducted to determine if bus ridership in a large city is higher during the afternoon…

A: Note ,   Since you have asked multiple question, we will solve the first question for you. If you…

Q: Chatterbug, a social networking site on the Intermet, would like to determine if gender is related…

A: a)   In this case, it is needed to check whether gender is related to time spent on a Chatterbug…

Q: Look at the following APA sentence summaries for a One-Sample t-test. Which APA sentence could be…

A:

Q: The coach of a basketball team thinks the referee is using a weighted coin to decide which team gets…

A: 1)   Assume that pi’s are the proportion of the heads and tails, respectively. For all i = 1, 2.

Q: An article in a journal reports that 34% of American fathers take no responsibility for child care…

A: Given Information: Hypothesized value of population proportion p0=0.34 Sample size (n) = 232 Out of…

Q: In a study of 783 randomly selected medical malpractice lawsuits, it was found that 489 of them were…

A: From the above data The option C is correct H0 : P = 0.5 H1 : P > 0.5

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.