A suitable null hypothesis in AOV is the following:   a) all population means are unequal b) all population means are equal c) the sample data was not drawn from the population d) none of the above

Q: A p-value=0.01 indicates that: a) there is strong sample evidence against the null hypothesis. b)…

A: The p value of the test statistic in any hypothesis test is probability value or significance is,…

Q: The appropriate null hypothesis for the question posed by the researcher is: a. The observed counts…

A: Given :

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: Assume that there is no overlap between the boxplots for three drug treatments where each drug was…

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Q: •2) You wish to know if the distribution of preferences for cake, ice cream, or cookies differs…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: Which of the following statements are true? There may be more than one correct statement; check all…

A: Independent Two Samples t-test: Suppose there are two populations independent of one another. A…

Q: A major airline company is concerned that its proportion of late arrivals has substantially…

A: The historical data shows that 18% of the company airlines have arrived late.

Q: It is desired to conduct a research on whether there is a relationship between education level and…

A: In this case, it is needed to check whether there is a significant relationship between attitude…

Q: A Labrador retriever club has 130 members: 65 black Labs, 44 golden Labs, and 21 chocolate Labs.…

A: A chi-squared test of goodness of fit is suitable to be used in this situation.

Q: no diet. A random sample of 100 adults with high A1C levels, on no special diets, High A1C Levels (a…

A: (a)In the given case, an experiment is required to be conducted to know whether the High A1C Levels…

Q: The following data show the monthly allowance of several students living in two cities City Pasig…

A: In hypothesis testing, the value of the test statistic is calculated using the sample values. It is…

Q: Assuming that all the assumptions of statistical hypothesis testing are met, based on the z-score of…

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Q: of 2) A teacher figures that final grades in the statistics department are distributed 5%. At the…

A: Claim: Grade distribution for the department is different than expected. Null Hypothesis: H0: Grade…

Q: In a one-way ANOVA with 3 groups, a rejection of the null hypothesis implies that a. the 3…

A: Anova stands for Analysis of variance. It is used to analyze the difference between the means of…

Q: Are the requirements met to test a hypothesis for the following two population proportions? If not,…

A: Conditions for testing the population proportion: The samples should be selected at random. The…

Q: In a studyy of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: What is the observed level of significance (P-value) for a two tailed z-test if the sample size is…

A: Calculation of p value in case of normal is same as calculating the normal probability area

Q: number of accidents according to months is homogeneous or not at the 95% confidence level. Which of…

A: Given : It is desired to investigate whether the number of accidents according to months is…

Q: Political Party Affiliation and Educational Level High School Associate Bachelor Master Democrat. 1…

A: a) Null and alternative hypothesis Ho :  There is no association between educational level and…

Q: In a two-sample t-test, suppose you obtain sample means equal to 25 in sample 1, and 26 in sample 2.…

A: Given that  sample means equal to 25 in sample 1, and 26 in sample 2.

Q: his occurs when there are two potential variables that could have caused the outcome and it is not…

A: Confounding   occurs when there are two potential variables that could have caused the outcome and…

Q: a)  Define the population parameter in context in one sentence. b)  State the null and alternative…

A: a)  Define the population parameter in context in one sentence. Answer population parameter in…

Q: 1)If I conduct a study looking at the effect of music on mood, and I have separate groups of…

A: One-way ANOVAThis method is utilized for comparing means of more than two populations.Related sample…

Q: f the results of a statistical test are considered to be statistically significant, what does this…

A: In general, the results of a statistical test are significant if p-value is smaller.

Q: Chi-squared goodness of fit test to determine if box colors are not equally likely using a=0.05.

A: As per policy I have calculated first main question that is part1) and 2)  part 3) is totally…

Q: if a significance test gives p-value 0.0005... A) the effect of interest is practically significant…

A: The objective is to identify the correct statement if significance test gives p-value 0.0005.

Q: A necessary condition to perform the hypothesis test is: O The observed frequencies must be at least…

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Q: Which of the following is not an assumption underlying the independent-measures t formula for…

A: To find: Which of the following is not an assumption underlying the independent-measures t formula…

Q: ementary school teachers who are women rn less than their male counterparts. She llects data from…

A: We have given that  Sample size n1= 100    n2= 225 Sample mean M1=57600  , M2= 58800 Standard…

Q: You wish to test the following claim (H) at a significance level of a = 0.10. Ho: 1 = 2 Ha:1 > 2 You…

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Q: n order to compare the means of two populations, independent random samples of 225 observations are…

A: μ1 = population mean for sample 1 μ2 = Population mean for sample 2

Q: A sample of 100000 people is desired to be drawn at 95% confidence level and 2.5% significance…

A: To estimate sample size in this case, the required values are N=population size e=margin of error…

Q: eague A teams visit League B teams, the League A pitcher must bat. So, if the DH does result in more…

A: The data values given are shown below:League A parkLeague B…

Q: an experimenter conudcted a two-tailed hypothesis test on a set of data and obtained a p-value of…

A: The two-tailed p-value is given as = 0.30

Q: Which of the following gives the correct null hypothesis for testing whether the "age" is…

A: Given that  \Carrier 18 -34 35 - 54 55+ Total  USPS 72 97 76 245 UPS 52 76 34 162 FedEx 31…

Q: A non-significant result may be caused by a: a. very cautious significance level b. large sample…

A: In hypothesis testing, the result is statistically significant if the null hypothesis is rejected.…

Q: 46) In a two-tailed hypothesis test for a population mean, an increase i A) result in a sampling…

A: The formula for test statistics for population mean is,

Q: 1.In a particular year, 68% of online courses taught at a system of community colleges were taught…

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Q: Q2)A two sided hypothesis test is performed about a population proportion p.The valid alternative…

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Q: A study was conduced to investigate whether the mean number of snack bars sold at two airport…

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Q: Probability Alternative Hypothe Null Hypothesis (H) Research Background Evaluation (H) (One Gid…

A: Given that  1. The average IQ of a sample of 1 Year college students and 2 year students were…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.