true? What error we make when we fail to reject the null hypothesis when the alternative is actually A. Type I B. Type II C. No error Consider the null and alternative hypothesis: Ho = 1/2, H₂ 2. For which of the following 95% confidence intervals would you reject the null hypothesis? A. (-1.5, 2.5) B. (0, 2.5) C. (0.1, 2.5) Suppose you conduct a hypothesis test Ho: P₁-P2-0 versus Ha: P1 P2 > 0 and obtain a test statistic z = 2.5. Which of the following is the correct Matlab command for the p-value?

(c) = 4 and n= 113. (Round your answers to 3 decimal places.) 95 percent confidence intervals is 1. 98 percent confidence intervals is 99 percent confidence intervals is 1. 1. [

Ch 9, #10 (pg. 264) Stats Question: A random sample of n=4 individuals is selected from a population with mu = 35, and a treatment is administred to each individual in the sample. After treatment, the sample mean is found to be M = 40.1 with SS = 48. Based on the sample data, does the treatment have a significant effect? Use a two-tailed test with alpha = .05.  I understand how to determine that t = 2.55. What I don't understand is how the critical value of 3.182 was determined in the explanation posted on this site.

learn.zybooks.com ne Submission ... D2L. 6-2 Participation Activities: Con... Z 5.2 MAT 240: Applied Statistics | Iza dStatistics home > 6.2: Confidence intervals for population means CHALLENGE 6.2.1: Confidence intervals for population means. ACTIVITY 389226.2543846.qx3zqy7 Jump to level 1 The additional growth of plants in one week are recorded for 11 plants with a sample standard deviation of 2 inches and sample mean of 10 inches. t* at the 0.05 significance level = Ex: 1.234 Margin of error = Ex: 1.234 Confidence interval = [ Ex: 12.345 Ex: 12.345 1 [smaller value, larger value] 1. Check Next Feedi 6.2.2: Relating confidence intervals to hypothesis testing (one sample). 16. qx3zqy7 Jump to level 1 n auto maker is interested in information about how long transmissions last. A sample of transmissions a onstantly and the number of miles before the transmission fails is recorded. The auto maker claims that th ansmissions can run constantly for over 150,000 miles before failure. The…

The null hypothesis: H, : 0 The alternative hypothesis: H 1 :0 The type of test statistic: (Choose one) - The value of the test statistic: (Round to at least three decimal places.) The two critical values at the 0.1 level of significance: |and || (Round to at least three decimal places.) Can we conclude that the mean travel times of the Yes O No two routes are different?

A 95% confidence interval for the mean (u) of a population is computed from a random sample and found to be 9 ± 3. Which of the following is a correct statement? O a. if we took many, many additional random samples and from each computed a 95% confidence interval for H, approximately 95% of these intervals would contain u. O b. 95% of values sampled are between 6 and 12. O c there is a 95% probability that the true mean is 9 and a 95% chance that the true margin of error is 3. O d. there is a 95% probability that u is between 6 and 12. O e. all of the above are true.

Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data.  Test the null hypothesis that the population frequencies for each category are equal.  α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 40 fo = 60 fo =55 fo = 45 fe = fe = fe = fe =   What is the correct result based on the data?

Tonya wants to estimate what proportion of her school's seniors plan to attend the prom. She interviews an SRS of 50 of the 750 seniors in her school and finds that 36 plan to go to the prom. Which of the following is not one of the conditions that needs to be met in order to construct a confidence interval for the parameter? Large Counts: n(1 – p) = 14 10 Random: The sample is a simple random sample 10% n = 50 is less than 10% of the population size Large Counts: nộ = 36 > 10 Normal/Large Sample: The sample size is large n 50 30. O O O O O

Suppose that in a random sample of 600 employed Americans, there are 55 individuals who say that they would fire their boss if they could. Calculate a 90% confidence interval for the population proportion who would fire their boss if they could. (Round the answers to three decimal places.) ______to______

Can you answer this?