The table below shows data on research to examine the perception of business ethics among 3 groups of employees (higher score indicates higher ethical values). ABC656557446545656446556466654565a.State the null and alternative hypothesis for single factor ANOVA to test for any significant difference in the perception among three groups. (1 marks)b.State the decision rule at 5% significance level.(2 marks)c.Calculate the test statistic.(6 marks)d.Based on the calculated test statistics decide whether any significant difference in the mean price of gasoline for three bands.

Q: 28 and 84 days after birth. 12 were fed on a high protein diet and 7 on a low protein diet, and the…

A: Claim: A high protein diet would cause more weight gain, on average

Q: A random sample of n1 = 292 voters registered in the state of California showed that 141 voted in…

A: According to the provided data, (a) The level of significance, α is provided as 0.05. The null and…

Q: A random sample of 860 births in New york state included 434 girls. Use a 0.05 significance level to…

A: The aim is to test the claim that 48.8% of newborn babies are girls. The test hypotheses are given…

Q: DermioPizza claims that the average pizza delivery time by its staff is less than 30 minutes. To…

A: Let μ denotes the population mean pizza delivery time. The claim is that the average delivery time…

Q: In a certain school district, it was observed that 35% of the students in the element schools were…

A: Solution

Q: It was studied in the past that 38% of all adults favored death penalty. Do we have reason to…

A:

Q: For Business versus Engineering majors conduct a full, two-sample hypothesis test at the 10%…

A:

Q: significance. What is the hypothesized population proportion for this test? p = (Report answer as a…

A: Let p be the proportion of only children in the special program. Test is that the proportion of only…

Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A:

Q: The percentage of physicians who are women is 32.4%.  In a survey of physicians employed by a large…

A: This problem can be solved by using test of significance for single proportion. In usual notations,…

Q: Random and independent samples of 900 unmarried people and 1200 married people were asked if they…

A: Let, X1: The unmarried people who believes that a good diet is very important to good health. X1:…

Q: Are teacher evaluations independent of grades? After midterms, a random sample of 284 students was…

A: A null hypothesis is a statement of no difference and the alternative hypothesis is simply the…

Q: In a certain school district, it was observed that 26% of the students in the element schools were…

A: Given , sample size = n = 299 Number students are only children's = x = 97 Claim : The 26% of the…

Q: The Survey of Study Habits and Attitudes (SSHA) is a psychological test designed to measure various…

A:

Q: A research assigns 21 adolescents to rate the likability of a person described in a vignette in…

A: Given Total observation, n=21 Number of treatments, k= 3 Fobt = 4.08

Q: suppose 223 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: A random sample of n1 = 292 voters registered in the state of California showed that 143 voted in…

A: From the given information, let X1 be the number of registered voters in the state of California…

Q: In a certain school district, it was observed that 32% of the students in the element schools were…

A:

Q: Directions: Click on the Data button below to display the data. Copy the data into a statistical…

A: The random variable weight gain follows normal distribution. There are 3 independent samples which…

Q: ing the normal approximation for the binomial distribution (without the continuity correction), was…

A:

Q: Do the results support the belief that 51.5​% of newborn babies are​ boys?

A: Given : number of success , x= 430.0 sample size, n = 845 population proportion,p=…

Q: What does it mean to have a positively or negatively skewed result to a research study? What are…

A: The Skewness of any distribution is the measure of symmetry of the distribution. It tells the…

Q: b. Determine if interaction exists between factor A and factor B. Use α = 0.05 Choose the correct…

A: The test statistic for interaction effect between factor A and B is 1.829  Test statistic F=1.829…

Q: A random sample of n1 = 295 voters registered in the state of California showed that 141 voted in…

A: Note: Hi there! Thank you for posting the question. TO avoid the plagiarism issues, we have used the…

Q: What does the three F ratios in a two-factor ANOVA is based?

A:

Q: A researcher wanted to examine whether type of dog food (freeze dried meat vs generic brand kibble)…

A: The test is to check whether type of dog food (freeze dried meat vs generic brand kibble) would…

Q: The null and alternative hypotheses would be:          Select an answer p1 μ1  Select an answer ≠  =…

A: It is claimed that, freshmen psychology majors more likely to change their major before they…

Q: their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. What is the…

A: Given: sample size,n = 7 population mean, μ = 6.6significance level, α = 5% = 0.05

Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given that, x=54,n=214 The sample proportion is, Null and alternative hypothesis:

Q: In a certain school district, it was observed that 27% of the students in the element schools were…

A: Introduction: Consider that p is the true proportion of only children among the children in the…

Q: На:р 0.3 (D) (E) (F) Ho:p = 0.371| Ho:p = 0.371| Ho:p = 0.371 На:р 0.371 Using the normal…

A: We have given that the hypothsized population proportion p = 0.30, sample size n = 291 and…

Q: Delta studied the relationship between the number of passengers on a particular flight and the cost…

A: The hypotheses are given below: Null hypothesis: H0: ρ= 0 Alternative hypothesis: Ha: ρ > 0…

Q: A researcher who wanted to understand whether there was a significant difference between the average…

A: b=3, n-1=14 and n-1=14, n=15 We want complete the ANOVA table and  test the hypothesis

Q: Suppose 219 subjects are treated with a drug that is used to treat pain and 51 of them developed…

A: From the provided information, Population proportion (p) = 0.20 Sample size (n) = 219 Out of which…

Q: A researcher wants to examine the effects of sex (male/female) and level of education (no college…

A: Given: Independent factor 1. Sex (Male and Female) 2. Level of Education (No college…

Q: In a certain school district, it was observed that 30% of the students in the element schools were…

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

Q: A tyre manufacturer wants to know if there is a sizable price gap between their tyres and those of a…

A: The question is about hypo. testing Given :   To find : To test whether there is a signif. diff. in…

Q: Can you rework this basing the decision on the P-value corresponding to the observed value of the…

A: We have given that n1 = 40, x̅1= 9.1 s1 = 1.9 n2 = 50, x̅2 = 8.0 s2 = 2.1 Significance level (α) =…

Q: random sample of 851 births included 431 boys. Use a 0.10 significance level to test the claim that…

A: Given data number of success , x= 431.0 sample size, n = 851 population…

Q: Reports show that 92% of online searches in March 2021 use Google as the search engine. A network…

A: Given: p=0.92 p^ = 758800=0.9475 α = 0.05 to test the hypothesis of proportion of searches that use…

Q: What is the relationship between the t-test and the sample size? (

A: Here identifying the relationship between t test and sample size

Q: In 2005, Health Canada claimed that 16.9% of Canadian adults are obese. A researcher wanted to check…

A: From  the given information,   α=0.07

Q: Why do we conduct a post hoc analysis in ANOVA?   to make a comparison of individual adjuster…

A: The ANOVA analysis is given. want to explain why post-hoc analysis in ANOVA is needed.ANOVA is used…

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.