(1) Create your own example of a Related/Paired Samples t-Test. You don't have to solve this example, but I want you to demonstrate that you understand the methodology (the way a study is designed) of the Paired-Samples t-Test. Include the following: IV: DV: Null Hypothesis: Alternative Hypothesis:
Q: A student decides to spin a dime and determine the proportion of times it lands on heads. The…
A: Given: p0=0.5x=17 n=25p^=1725=0.68
Q: In a clinical trial, 27 out of 875 patients taking a prescription drug daily complained of flulike…
A:
Q: In a previous year, 56% of females aged 15 and older lived alone. A sociologist tests whether this…
A: It was stated that in a previous year, 56% of females aged 15 and older lived alone. A sociologist…
Q: In a clinical trial, 27 out of 841 patients taking a prescription drug daily complained of flulike…
A:
Q: f you have a paired samples test where the alternative hypothesis is incorrect as it predicts a…
A: While testing hypotheses one may commit two types of error as type I error and type II error. Type…
Q: Random samples of size 150 are collected from each of two populations to test the hypotheses The…
A: The p-value can be calculated as: P-value =2*P[Z>2.23]
Q: Y, = Po+P,X1+P2X2+ u ch of the following describes how to test the null hypotheses that either B, =…
A: The multiple regression equation is, Here is the slope are the slopes of the regression…
Q: QUESTION 3 You want to run a 2-tailed independent t-test on sample 1 (M = 41.2, SD - 1.8) and sample…
A: For Critical value ,when we have two tailed test degree of freedom is n1+n2-2= 6+6-2 = 10
Q: Which of the following statement is INCORRECT about the reason for running a two-samples t-test…
A: Answer is in step 2
Q: In a clinical trial, 22 out of 852 patients taking a prescription drug daily complained of flulike…
A: Given that, x = 22, n =852
Q: The Critical Value for a two-tailed z-test with alpha = 0.01 would be O +/-1.96 +/-1.64 +/-2.33…
A: Note: Hi there! Thank you for posting the question. As your question has multiple questions, as per…
Q: A large manufacturing company investigated the service it received from its suppliers and discovered…
A: We have been given that, 44% of all material shipments were received late. Thus, p0 = 0.44. ∝ =…
Q: A researcher obtains t=2.25 for a repeated measures study using a sample of n=10 participants. Based…
A: For alpha level 0.05: The degrees of freedom, df=n-1=10-1=9 The degrees of freedom is 9. Computation…
Q: A two-sample t-test for a difference in means was conducted to investigate whether there is a…
A: Given: Test Statistic = 2.201 P-value = 0.027
Q: Independent random samples are selected from two populations and are used to test the hypothesis Ho:…
A:
Q: A researcher obtains t(20) = 2.00 and MD = 9 for a repeated-measures study. If the researcher…
A:
Q: A one sample t test has n = 12. If using a two-tail test (proportion in two tails combined) with an…
A: Sample size n=2.201 Significance level α=0.05 The degrees of freedom n-1=12-1=11
Q: Cohen’s d is most useful when we are trying to understand the results of a test of hypothesis with…
A: In hypothesis testing we test the hypothesis regarding the population parameter.
Q: part C please..ive asked the question 4 times and all times it was wrong
A: I am giving solution for part C only. Given information- Sample size, n = 519 Sample proportion,…
Q: 2. Using the data provided in question 1, assume now that the data was obtained from two indepen-…
A: It is been asked to test whether the mean LDL cholesterol level between corn flakes diet and oat…
Q: Suppose that xi and x2 are random samples of observations from a population with mean m and variance…
A: Given Information: Mean of x1 and x2=mvariance of x1 and x2=s2No. of point estimators=03…
Q: The rate of allergies in children was 15% in 2002. A medical researcher is curious whether advances…
A: From the given information, n=500 and x=65.
Q: In a clinical trial, 18 out of 820 patients taking a prescription drug daily complained of flulike…
A: The given data is, x=18, n= 820 , p0=0.017, α =0.01 The hypothesis is, H0: p=0.017 VS H1: p >…
Q: In order to study the amount of saving and income of two populations of employees (boys and girls),…
A: 1) Two hypothesises can be formulated for comparing two populations. I) H0: There is no significant…
Q: In a clinical trial, 27 out of 845 patients taking a prescription drug daily complained of flulike…
A:
Q: In a clinical trial, 18 out of 864 patients taking a prescription drug daily complained of flulike…
A: Here we have to fill the boxes from given information
Q: 4) The results of a random sample of children with pain from musculoskeletal injuries treated with…
A: Given that Two varaibles: Improvement and treatment We have 2×3 contingency table The data is…
Q: In a clinical trial, 23 out of 831 patients taking a prescription drug daily complained of flulike…
A: We want to test the hypothesis
Q: Under what circumstances can you use a z-test instead of a t-test to compare a sample against a…
A: t test and z-test are the statistical tests that are used to find if the value of the sample mean is…
Q: Answer true or false to each of the following statements and explain your answers.a. In a completely…
A: (a)The experimental units are assigning randomly to the treatments they are not assigning to the…
Q: In a clinical trial, 19 out of 864 patients taking a prescription drug daily complained of flulike…
A: The sample size is 864, population proportion is 0.019. Checking condition:
Q: If I have a sample of 20 people what is my T-threshold for a two-tail test and an alpha of 0.1…
A: Given: Sample size (n)=20 Level of significance α=0.1%=0.001 Test is two tailed.
Q: In a clinical trial, 16 out of 857 patients taking a prescription drug daily complained of flulike…
A: We have to find given conditions.
Q: In a clinical trial, 24 out of 855 patients taking a prescription drug daily complained of flulike…
A: given that, p=0.023 n=855 α=0.05
Q: You complete a hypothesis test using alpha = .05 and based on the evidence from the sample, your…
A: Researchers do a Hypothesis test to decide what is really happening withe the given data, there are…
Q: A researcher is using a two-tailed hypothesis test with α = 0.05 to evaluate the effect of a…
A: Given, α = 0.05 critical region are t = ± 2.080 From t table look at the value 2.080 in two-tailed α…
Q: In a clinical trial, 20 out of 880 patients taking a prescription drug daily complained of flulike…
A: Given,n=880x=20p^=xnp^=20880=0.0227α=0.05
Q: A sample is selected from a population with population mean = 50. After a treatment is administered…
A: μ=50 M = 55 s2 = 64 n = 36 α = 0.05
Q: In a clinical trial, 20 out of 880 patients taking a prescription drug daily complained of flulike…
A: Given,n=880x=20p^=xnp^=20880=0.0227α=0.05
Q: In a clinical trial, 19 out of 879 patients taking a prescription drug dally complained of flulike…
A: One proportion Z test is applicable
Q: In a clinical trial, 19 out of 861 patients taking a prescription drug daily complained 1.9% of this…
A: Given that, Because np0(1-p0) = 861×0.019×(1-0.019)=16.04818≈16.0>10, the sample size is less…
Q: Test the null hypothesis H0:μ=3.9 against the alternative hypothesis HA:μ≠3.9 based on a random…
A:
Q: The manufacturer of a new antidepressant claims that, among all people with depression who use the…
A: The random variable is people who find relief from depression. The population proportion is 65%. The…
Q: Q2. Under imperfect multicollinearity, A) the OLS estimator is biased even in samples of n> 100. B)…
A: Imperfect multicollinearity means that there is a linear relationship between the variables, but…
Q: In a clinical trial, 26 out of 886 patients taking a prescription drug daily complained of flulike…
A: The value of p0 is 0.026 and the sample size n is 800.
Q: A high school is proud of its advanced chemistry class, in which its 16 students scored an average…
A: Given data is appropriate for testing of hypothesis to test t-test for single mean, because it is a…
Q: In order to study the amount of saving and income of two populations of employees (boys and girls),…
A: 1) Two hypothesises can be formulated using given data. I) H0: There is no difference in the mean…
Q: In a clinical trial, 16 out of 857 patients taking a prescription drug daily complained of flulike…
A:
Q: A major credit card company is interested in the proportion of individuals who use a competitor’s…
A: The test hypotheses are: H0: p=0.65 vs Ha: p>0.65. It is given that the p0=0.70, the p-value is…
Q: In a previous year, 59% of females aged 15 and older lived alone. A sociologist tests whether this…
A: Given data number of success , x= 246 sample size, n =400 population proportion,p=…
(1) Create your own example of a Related/Paired Samples t-Test. You don't have to solve this example, but I want you to demonstrate that you understand the methodology (the way a study is designed) of the Paired-Samples t-Test.
Include the following:
IV:
DV:
Null Hypothesis:
Alternative Hypothesis:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Also, using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2009 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2009 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2019 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2019 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?You complete a hypothesis test using alpha = .05 and based on the evidence from the sample, your decision is to fail to reject the null hypothesis. If the treatment actually does have an effect, which of the following is true?
- QUESTION 19 To study whether the students at a university are more or less satisfied with the current food service compared to the previous food service, a sample of 90 current students is taken and finds that 37 are satisfied with the current food service. A similar survey was taken for the previous food service in which 89 students surveyed found that 40 were satisfied with the previous food service. When testing the hypothesis (at the 5% level of significance) a higher percentage of students were satisfied with the previous food service than with the current food service, what is the test statistic? (please round your answer to 2 decimal places)For the T-test of the single sample, does the GPA of a group of students who were considered gifted in primary school is higher than the university's mean GPA? How do you state your hypothesis and then how do you decide based on the t-test if we should reject the null hypothesis?Why is the null hypothesis for a dependent-samples t- test always μD=0 μD=0 ?
- In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equal-size towels were used, with four sections of towels tested per brand. The absorbency rating data follow. Brand x y z 91 100 82 100 96 89 89 95 89 88 93 80 #1) At a 0.05 level of significance, does there appear to be a difference in the ability of the brands to absorb water? State the null and alternative hypotheses: A) H0: ?x ≠ ?y ≠ ?zHa: ?x = ?y = ?z B) H0: ?x = ?y = ?zHa: ?x ≠ ?y ≠ ?z C) H0: At least two of the population means are equal.Ha: At least two of the population means are different. D) H0: ?x = ?y = ?zHa: Not all the population means are equal. E) H0: Not all the population means are equal.Ha: ?x = ?y = ?z #2) Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = #3) State your conclusion. A) Reject H0. There is…In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equal-size towels were used, with four sections of towels tested per brand. The absorbency rating data follow. Brand x y z 91 100 82 100 96 89 89 95 89 88 93 80 #1) At a 0.05 level of significance, does there appear to be a difference in the ability of the brands to absorb water? State the null and alternative hypotheses: A) H0: ?x ≠ ?y ≠ ?zHa: ?x = ?y = ?z B) H0: ?x = ?y = ?zHa: ?x ≠ ?y ≠ ?z C) H0: At least two of the population means are equal.Ha: At least two of the population means are different. D) H0: ?x = ?y = ?zHa: Not all the population means are equal. E) H0: Not all the population means are equal.Ha: ?x = ?y = ?z #2) Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = #3) State your conclusion. A) Reject H0. There is…A nationwide study of undergraduate students reported that the mean number of drinks consumed per week during the spring semester is 7.96. The mean number of drinks consumed per week at USC is 7.64 (s.d.=2.55, N=412 Health services is concerned that USC students are consuming significantly more alcohol per week than the national average. Using an alpha level of .05, Is there sufficient evidence to be concerned? Be sure to select the correct critical value for the alternative hypothesis, and then use this evidence to make your conclusion
- What is the critical value of t for an independent samples t test if a researcher conducts a two-tailed test, alpha is set at .05, and there are 40 degrees of freedom?. The term sample usually refers to a sample that ___ - Consists of people with chemical dependency problems - Uses the same group of individuals with a before/after measurement - Requires a dependent variable for hypothesis testing - Is randomly selected from two dependent populationsA major credit card company is interested in the proportion of individuals who use a competitor’s credit card. Their null hypothesis is H0: p=0.65H0: p=0.65, and based on a sample they find a sample proportion of 0.70 and a pp-value of 0.053. Is there convincing statistical evidence at the 0.05 level of significance that the true proportion of individuals who use the competitor’s card is actually greater than 0.65 ?