alpha level for
Q: The janitor calculates a p-value for the hypothesis test of approximately 0.113. Choose the correct…
A: here given p-value = 0.113 and significance level = 0.01 p-value is probability of getting extreme…
Q: Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: Q3.1 Probability of Type 1 For a particular type of hypothesis test with a sample size of 120,…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: Test the claim that the mean GPA of Orange Coast students is larger than the mean GPA of Coastline…
A: Given, α = 0.10n1 = 60M1 = 2.8σ1 = 0.08n2 = 60M2 = 2.79σ2 = 0.05 To find, Test the claim that the…
Q: Test the claim that the proportion of people who own cats is significantly different than 30% at the…
A:
Q: Consider a hypothesis test of the claim that following a particular diet reduces the likelihood of…
A: Here we consider a hypothesis test of the claim that following a particular diet reduces the…
Q: What is the test statistic for this sample? (Report answer accurate to three decimal places.) test…
A: Given that Sample size n = 380 Number of success, X = 215 Level of significance = 0.002
Q: If the probability of mistakenly failing to reject the null hypothesis is 0.20, what is the…
A: A Type I error is when we reject a true null hypothesis. Lower values of α make it harder to reject…
Q: A hypothesis test is conducted at the α = 0.05 significance level and the null hypothesis is not…
A: Given : A hypothesis test is conducted at the α = 0.05 significance level and the null hypothesis…
Q: college students average about 7 hours of sleep per night. You believe this number is incorrect and…
A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…
Q: In a hypothesis test with a significance level of a = 0.01, we should reject the null hypothesis if…
A: The given is level of significance α=0.01 So, in hypothesis testing, we can reject the null…
Q: Question 6 ( The null hypothesis is not rejected at a significance level of 0.05. Therefore the null…
A: Rejection criteria:- • When calculated p-value is less than or equal to significance level, you…
Q: there anything else about the experiment in Question 2 which would cast doubt on the reliability of…
A: Given Group of Motorist % of new compound Average mm 1 5 8 2 5.5 8.4 3 6 8.6 4 6.5 8.8…
Q: Which of the following is NOT true when we increase the significance level of a hypothesis test?…
A:
Q: James is a school psychologist who wants to implement stress coping skills to help his students. His…
A: Here the direction of the test is to the left.
Q: Test the claim that the mean GPA of night students is significantly different than the mean GPA of…
A: Given, n1=75 xbar1=2.49 s1=0.07 n==75 xbar2=2.45 s2=0.02
Q: Null and alternative hypothesis of the following: An aerobics instructor believes that regular…
A: We test the null hypothesis Ho:Nurses' satisfaction and nurses' efficiency are independent. Against…
Q: Russell says he is willing to accept a 5% chance of making a Type I error in this study. What is the…
A: Russell says he is willing to accept a 5% chance of making a Type I error in this study. so…
Q: In a statistical test, we have a choice of a left-tailed test, a right-tailed test, or a two-tailed…
A: Explanation: given that in a statistical test, we have a choice of a left-tailed test, a…
Q: Road Transport Department claims that the mean speed of cars on a highway is 114 km/h. An insurance…
A: In question, Given the mean speed of cars on highway is 114 km/h. The sample of size is 21 cars…
Q: (1) We are conducting many hypothesis tests to test a claim. Assuming the null hypothesis is true,…
A: Since you have asked multiple question, according to our guidelines we will solve the first question…
Q: You have a one-sided hypothesis test with alpha level 0.05 and p-value of 0.04. Which of the…
A: Given: α=0.05P-Value=0.04
Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…
A: From the provided information, Sample size (n) = 69 From which 57 potential voters prefer candidate…
Q: QUESTION 2 You are a research assistant at a zoo. The question of your study is "Has the proportion…
A:
Q: Test the claim that the proportion of men who own cats is significantly different than 20% at the…
A: The given data is as follows:Significance level, Sample size, Sample proportion,
Q: Problem: If you are running a 2-sided test with a significance level 5% and the test statistic is…
A:
Q: Recall that a test is statistically significant at a particular significance level if the null…
A: Given that If a test is statistically significant at 5% level of significance. That is the null…
Q: A well-known brokerage firm executive claimed that 80% of investors are currently confident of…
A: given that, p=0.8 n= 200 p^= 0.83 α=0.01
Q: Test the claim that the proportion of men who own dogs is significantly different than the…
A: The null and alternative hypothesis be two-tailed test statistic = 2.2p-value = 0.0285
Q: A Type I error is: Select one: incorrectly specifying the null hypothesis. accepting the null…
A: Here we have to select the correct option for Type I error
Q: x: 5, 5, 5, 2, 6, 5, 4, 3, 7, 3 y: 13, 13, 12, 12, 14, 17, 12, 12, 15, 7 Conduct a hypothesis test…
A: Given Data : The following data for the X and Y variables are provided to find the sample…
Q: Suppose that for a particular hypothesis test, the consequences of a Type I error are very serious.…
A: Here given that for a particular hypothesis test, the consequence of a Type I error are very…
Q: The body weight of a healthy 3-month-old colt should be about ? = 76 kg. (a) If you want to set up…
A: "Since you have posted a question with multiple sub -parts,we will solve first three sub parts for…
Q: Question #: 7 Failure to reject a null hypothesis does not constitute proof that it is true, but…
A: #7 Given, failure to reject a null hypothesis does not constitute proof that is true, but rather…
Q: You complete a hypothesis test using α = .05, and based on the evidence from the sample, your…
A: Type II error : The probability of accepting ( not rejecting ) the null hypothesis H0 when the…
Q: Test the claim that the mean GPA of night students is significantly different than 2 at the 0.2…
A: Assume that μ is the true mean GPA of night students.
Q: Test the claim that the proportion of men who own cats is significantly different than 90% at the…
A:
Q: In a clinical study of an allergy drug, 108 of the 203 subjects reported experiencing significant…
A:
Q: 12% of all college students volunteer their time. Is the percentage of college students who are…
A: The hypothesized population proportion is p=12%=0.12The sample size is n=381The number of students…
Q: Type I error is "rejecting the null hypothesis when it is true." If a hypothesis, whether null or…
A: 5. Answer: I. Type I error is "rejecting the null hypothesis when it is true." III. The smallest…
Q: ata was gathered showing the average annual salary ($1,000s) and the average retirement age for a…
A: According to Bartleby guidelines here is only solution for first 3 parts. first type data in excel…
Q: Can you please help me answer the following as I got this incorrect on my assignment: Question:…
A: Given information: Student Heart Rate Exam Score A 76 78 B 81 68 C 60 88 D…
Q: Select the appropriate null and alternative hypothesis for the following research question: People…
A: The claim is that people who see therapists have lower depression than people who do not see…
Q: The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject H, when the…
A: Solution: From the given information, the P-value is 0.1162.
Q: Are Republicans just as likely as Democrats to display the American flag in front of their residence…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Choosing the alpha level for a hypothesis test allows researchers to control the
True or False?
I see two different answers given for this question.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Test the claim that the proportion of people who own cats is significantly different than 20% at the 0.02 significance level. The null and alternative hypothesis would be: Ho: 0.2 Ho:p 0.2 Ho: 0.2 O O O The test is: left-tailed two-tailed right-tailed O O Ho:p 0.2 of H₁:p> 0.2 H₁: 0.2 H₁ :p < 0.2 O O Based on a sample of 500 people, 22% owned cats The p-value is: (to 2 decimals)Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at the 0.02 significance level. The null and alternative hypothesis would be: Ho: M = μF Ho: PM = PF H₁ μM μF H₁:PM > PF The test is: left-tailed right-tailed two-tailed Based on a sample of 60 men, 30% owned cats Based on a sample of 40 women, 45% owned cats The test statistic is: Ho: PM = PF H₁: PM μF (to 2 decimals) (to 2 decimals) Ho: PM = PF Ho: M = μF H₁:PM ‡ PF H₁: μM < MFSuppose a hypothesis test was performed with a level of significance of 0.05. Then if the null hypothesis is actually true, then there is a 5% chance that the researcher will end up rejecting the null hypothesis in error. True False
- Test the claim that the proportion of men who own cats is smaller than 90% at the 0.01 significance level. The null and alternative hypothesis would be: Ho: µ 0.9 Ho:p 0.9 Ho:µ = 0.9 Họ:p H1:µ > 0.9 H1:p 0.9 Hị: µ < 0.9 H1:µ + 0.9 H1:p# 0.9 0.9 The test is: two-tailed left-tailed right-tailed Based on a sample of 200 people, 87% owned cats The test statistic is: (to 2 decimals) The critical value is: (to 2 decimals)If a hypothesis is rejected at significance level α = 0.01, is it possible that the hypothesis is not rejected if the same test was done at significance level α = 0.05 (with everything else staying the same)?hopes that the results of a trial period will enable her to conclude with a level of significance of 0.05 that the new procedure increases the average profit of installing a carpet. What will be the consequences if she makes a Type I error on her hypothesis test? A Type I error would mean that Carpetland implements a new procedure that actually decreases profits. A Type I error would mean that Carpetland implements a new procedure that actually increases profits. A Type 1 error would mean that Carpetland does not implement a new procedure that increases profits. A Type I error would mean that Carpetland does not implement a new procedure that decreases profits.. A Type I error would mean that Carpetland implements a new procedure that actually does not increase profits. A Type I error would mean that Carpetland implements a new procedure that actually does not decrease profits.
- When asked what it means for the result of a hypothesis test to be practically significant (or practically important), Tatum says this means that the P-value is small and the null hypothesis has been rejected. what is wrong about this?Looking at youth depression scores from a general sample of random children in the US, we want to determine if our sample is significantly different than the national average of scores of children with depression in the US. The national average of scores on a measure of depression is 5 points. We have no reason to assume it will be higher or lower than the US national average. The sample: 11 9 12 3 3 4 13 1. What is the null and alternative hypotheses? Do not specify any directionality. 2. What did you discover (using 95% Cl)? Provide an interpretation.Answer the following True or False: Suppose a hypothesis test was performed with a level of significance of 0.05. Then if the null hypothesis is actually true, then there is a 5% chance that the researcher will end up accepting the alternative hypothesis in error. false true
