One horse was selected at random from each of 80 races and categorized according to post position (the position assigned to the horse for the start of the race) and the position in which the horse crossed the finish line (first, second, etc). 1 - 4                      8           6        8       16 5 - 9                      3           6        5        28 Is the horse’s position at the end of the race depedent on post position? Set alpha at 5%. Which test of this section is being used?

Q: A researcher is interested in the impact of joining a weight loss program in the past 12 months on…

A: paired t test

Q: Bacterial contamination of surgical patients can occur from bacteria that contaminate the scrub…

A: A quartile defined as a special type of quantile which divides the number of data points into four…

Q: One-Sample Test Due to grade deflation in which professor have been giving too many failing grades,…

A: 1. Consider that p is the true proportion of students passed by the particular professor.

Q: The student newspaper called Campus Press polled a simple random sample of 280 undergraduate…

A: The categorical variable is student attitude. We have to find the value of the test statistic. This…

Q: 3) At the last census, 20% of the people in a town were less than 16 years old, 20% were 16-30, 25%…

A: The following data is given: Age Observed frequency < 16 30 16 - 30  31 31 - 45 37 46…

Q: It has been observed that social media has been very attractive to the millennials and has been used…

A: Given data of attention time: 20.5 3.4 20.7 12.1 2.9 21.5 5.4 32.0 32.6 35.6 12.9 33.1 14.0…

Q: A state biologist is investigating whether the proportion of frogs in a certain area that are…

A:

Q: travel company is investigating whether the average cost of a hotel stay in a certain city has…

A:

Q: Suppose that researchers collected a simple random sample of 39 children who had been identified as…

A: As given,  researchers collected a simple random sample of 39 children who had been identified as…

Q: Aresearcher selects a sample of 150 people to investigate the relationship between gender (male…

A: Given Information: Total number of people selected for sample = 150 Number of females = 80 Number of…

Q: A Little League baseball coach wanted to know if his team if representative of other teams in…

A:

Q: In a population of bats living in a certain region, 30 percent have a wingspan greater than 10…

A:

Q: A college entrance exam company determined that a score of 20 on the mathematics portion of the exam…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Question 6 Assume we know the following for a related-samples t test: N = 12, Mdifference = 635.65,…

A: Given data : sample size, n =12 sample mean, x̄ = 635.65 sample standard…

Q: Benzene is a pollutant that, according to studies, can be associated with health problems. Benzene…

A: Formula :

Q: A manufacturer suspects that the batches of raw material furnished by his supplier differ…

A: Note: As per the guidelines, in case of multiple subparts, answer to first three subparts will be…

Q: The percentage of 12- to 17-year-olds who reported talking at least once in the past year with their…

A: From the provided information, Sample size (n) = 1642 Out of which 1032 of them reported that they…

Q: An amusement park conducted an internal audit on the weit times of its customers for the pari's…

A: It is given that the population mean wait time of amusement park’s customers for the park’s rides…

Q: 5. The average family size was reported at 3.18. A random sample of families in a particular…

A: Consider that μ defines the population mean family size.   Here, it is needed to check whether the…

Q: The median pH level of the rain in a certain county, was 4.90. A biologist obtains a random sample…

A: Given that, n=19 α=0.05 and μ=4.90 Here, we use the test statistics                t=x¯-μsn where…

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

A: Note: Hey, since multiple sub parts are posted, we will answer first three sub parts according to…

Q: Test Ho: P1 = .4, P2 = .3, p3 = .2 and p4 = .1 vs H1: not Ho given that you sampled 100 items and…

A:

Q: Find the standardized test statistic to test the claim that , =H2. Two samples are randomly selected…

A: Given that,mean(x)=20standard deviation , σ1 =2.5number(n1)=40y(mean)=21standard deviation, σ2…

Q: Hypertension It has been found that 26% of men 20 years and older suffer from hypertension (high…

A: Given,   no of men who have high B.P =40 no of women who have high B.P=53 n1=145 n2=145 p1=26%=0.26…

Q: This box and whiskers was created from a random sample of new 1993 cars. The city gas milage (in…

A: Here we want to know interqurtile range.

Q: Conduct a test at the alpha equals0.10   level of significance by determining ​(a) the null and…

A: Given: x1=124n1=244x2=142n2=311

Q: ALPHA 0.01 Candy Company A B C Brown…

A: For the given data perform Chi square test

Q: How many subjects participated in an independent-samples t-test if a researcher reports, t (20) =…

A: Given information- We have given an independent-samples t-test. The value of test statistics is- t…

Q: Is the difference between the mean annual salaries of statisticians in Region 1 and Region 2 more…

A: Null hypothesis H0:  The difference between mean salaries of statisticians in two regions  is $8000…

Q: A Little League baseball coach wanted to know if his team if representative of other teams in…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: When engaging in weight control (fitness/fat burning) types of exercise, a person is expected to…

A: The standard deviation of the sampling distribution of a statistic is called its standard error. An…

Q: No Excel solution Sorry :( In a city, according to a 1990 demographic report based on the census…

A: Given: n=28 X~N(μ,σ)

Q: A bag contains 10 red, 10 blue, 10 green, and 10 yellow M&Ms. An M&M is randomly pulled from the bag…

A: From table

Q: A political scientist believes that affiliation to a political party (either Democrat or Republican)…

A:

Q: 5. The correlation coefficient is r = (Round to the nearest hundredth.) eck

A: X Y x-xbar y-ybar (x-xbar)(y-ybar) (x-xbar)^2 (y-ybar)^2 1 -2.5 -3 3.35 -10.05 9 11.2225 2 -4 -2…

Q: At a= 0.01 , test to see if there is a significant difference  in the average scores of students…

A: Given:  The following table shows the scores of each student from the three universities Uni A…

Q: Qs- In 2011, students asked to choose one of three exercises in a college, 51.6% of students chose…

A: The test hypotheses are given below: H0: all the three categories are equally likely (H0 : pA=0.516;…

Q: The intake of a particular substance for a random sample among 3 different groups of people is…

A:

Q: 5. In your population with a sex-ratio of 30 percent males (frequency = 0.30) and 70 percent females…

A: Given: Male = 30% = 0.30 Female = 70% = 0.70

Q: investigate, the analyst selects a random sample of 500 households and finds that 98% of them…

A: We have to find the null and alternate hypothesis.

Q: We have Ho : p = .4 and H1: p > .4. You run 50 experiments and find that the sample proportion is…

A: GivenH0:p=0.4H1:p>0.4sample size(n)=50sample proportion(p^)=0.42α=0.01

Q: A travel company is investigating whether the average cost of a hotel stay in a certain city has…

A:

Q: A study was conducted at a local college to analyze the average cumulative GPAs of students who…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: A random sample of 100 people was taken. Seventy-nine of the people in the sample favored Candidate…

A: Formula : Test statistic

Q: A sample of 100 clients of an exercise facility was selected. Let X = the number of days per week…

A: Given : X Frequency 0 3 1 15 2 32 3 28 4 10 5 8 6 4

Q: 6. Each of 25 consumers is provided with a package containing two different brands of instant…

A: Population is the set of all objects of interest. Sample is s subset of the population. It is not…

Q: A leading GIS company arranged a special summer training programme for students of a reputed…

A: The t test are used to measure the mean significant difference between the sample and population or…

Q: A fashion designer surveys companies about upcoming seasonal trends for average hem length. He…

A: a). If the results are significant in the ANOVA, it means that not all treatment means are…

Q: A psychologist would like to know whether the season (autumn, winter, spring, and summer) has any…

A: ANOVA table with calculations is shown below k = 4           n = 23           N =23x4 = 92…

Q: As a researcher for an environmental agency, you have been asked to determine if the air quality in…

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

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.