It is recommended to use a t-test to perform a hypothesis test for more than two groups. True False

Q: Let's say we want to do a 2 sample t-test and we want to know if the difference between groups 1 and…

A: Let's say we want to do a two sample t-test and we want to know if the difference between groups 1…

Q: 12. If a hypothesis test rejected the null hypothesis, would it still reject the null hypothesis if…

A: Given information- We have given that a hypothesis test rejected the null hypothesis. We have to…

Q: I want to find out whether students believe coffee helps them with their academic success.I asked 20…

A: There are two samples available.  First sample is of the students who believe that drinking coffee…

Q: An office manager wanted to know what if the average expenditure on office supplies per month was…

A: Population mean μ = 150 dollarsSample mean x¯ = 160 dollarsSample size n = 12We have given that an…

Q: What does it mean to find significant results from a hypothesis test?

A: Two types of hypothesis :  1  :  null hypothesis 2  :  alternative hypothesis

Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average…

A: We have to find type of test ..

Q: Suppose that in a random selection of 100colored​ candies, 29​% of them are blue. The candy company…

A: Claim: percentage of blue candies is equal to 26​% Null Hypothesis: H0:p=0.26 The percentage of blue…

Q: Describe an example of a type-II error in hypothesis testing.

A: Type-II error :  In statistical hypothesis testing, a type II error is a situation wherein a…

Q: Only 26% of psychology majors are satisfied with their career paths as compared to 50% of accounting…

A: Hi! Thank you for the question, As per the honour code, we are allowed to answer three sub-parts at…

Q: e p value used to reach a conclusion in a hypothesis testing pro

A: The p-value is a conditional probability of getting a test statistic as extreme or more extreme than…

Q: A statistician selects a sample of 20 participants and makes the decision to retain the null…

A: Hypothesis test are used to determine the relationship between the sample and population. Hypothesis…

Q: Professors collected data consisting of eye color and gender of statistics students. Among 1056…

A:

Q: What are important features of hypothesis testing?

A: Hypothesis testing is a crucial procedure to perform when it is expected to make inferences about a…

Q: When do we use alpha and beta in hypothesis testing?

A: Basics: Alpha is the probability of  making  Type I error in hypothesis test . i.e incorrectly…

Q: What is the formula for a 2-sample hypothesis test?

A:

Q: The one-tailed test only uses the null hypothesis whereas a two-tailed test uses both the null…

A: One tailed test :          The one tailed test  in which critical region is one sided it is either…

Q: ail a course during their freshman year. A university journal club randomly samples 9 upperclassmen…

A:

Q: STOCK MTN Vodacom Cell C PRICE Po 2008 285 155 110 QTY qo 2008 370 320 700 PRICE P₁₁ 2011 215 120 90…

A:

Q: Suppose you would like to test whether there is a difference in the satisfaction level (satisfied,…

A: Provided data is, test is performed to check whether there is a difference in the satisfaction level…

Q: If the F-statistic is close to one, what would be the decision of a hypothesis test?

A: The F-statistic is the test statistic for F-tests. In general, an F-statistic is a ratio of two…

Q: What it means to find significant results from a hypothesis test?

A: Introduction :-  To explain what it means to find significant results from a hypothesis test.

Q: Suppose 225 subjects are treated with a drug that is used to treat pain and  51 of them developed…

A: Given that  Sample size n =225 Favorable cases x =51 Sample proportion p^=x/n  =51/225 =0.2267

Q: 1. why do two samples need to be independent when doing a hypothesis test ? 2.  Could you do a…

A: Part 1: Independent samples are samples drawn from same population or different population that are…

Q: If your claim is in the alternative hypothesis and you fail to reject the null hypothesis, then your…

A: Given data: claim = alternative hypothesis and we fail to reject the null hypothesis, To decide:…

Q: Do the needs of patients in the emergency room differ for those who come by car vs. those by…

A: There are two categorical variables which are vehicle and Emergency room. Vehicle has 2 types and…

Q: If p- value is greater than alfa, the null hypothesis is not rejected. True O False

A: The p-value measures the probability of getting a more extreme value than the one you got from the…

Q: What is a p-value, and how is it used in hypothesis testing?

A: According to the given question  We have to define P-value and how is it used in hypothesis testing.…

Q: What are factors to consider in choosing in a P-value for a hypothesis test?

A: Answer:-  There are 3 factors need to consider in choosing a P value.

Q: The business college computing center wants to determine the proportion of business students who…

A: Given that: Test statistic, z=2.5

Q: 28% of students at a university bought lunch from the cafeteria on class days. On a recent class…

A: Givenp=28%=0.28sample size(n)=486No. of students had bought lunch(x)=149p^=xn=149486p^=0.3066

Q: 2. Is the hypothesis above a one-tail or a two-tail hypothesis?

A: We have given that  Sample size n= 1000 Favorable cases x = 89 Sample proportion p^=x/n

Q: Which can be used for hypothesis testing for matched data pairs? OT test O Sign test O Signed-rank…

A: For the given data Select the correct choice

Q: A researcher is interested in determining whether there is a difference in male college students and…

A: Given, No. of female students surveyed (n1) =82 No. of female students who preferred online classes…

Q: Explain how the P-value is obtained for a one-mean z-test in case the hypothesis test is a. left…

A: p-value:The probability value associated with a statistical test is defined as the p-value. In other…

Q: What does the null hypothesis assume for two independent sample t test

A: Null hypothesis is also known as no difference statement.