Determine the critical values. O +2.023 O +2.024 O+1.685 O +2.026 O +1.687 O +1.96 O +1.645 State your decision. O Accept Ho O Fail to reject Ho O Reject Ho A health professional obtains records for 38 patients who have undergone a certain surgical procedure and finds the average length of stay is 3.73 days with a standard deviation of 1.44 days. Using a = 0.05, is there evidence to suggest the actual average length of stay for this surgical procedure is 3 days? What are the hypotheses? O Ho: x= 3.73 vs H₁ : 3.73 ☎ ‡ Ο Ηo : μ = 3.73 vs H₁ : µ ‡ 3.73 O Ho: = 3 vs H₁ : x ‡ 3 Hoμ = 3 vs H₁ : µ ‡ 3 Calculate the test statistic using the correct letter. Oz = 3.13 Ot=-3.13 Ot = 3.13 Oz = -3.13

The mean and standard deviation of Carbon concentration is 5 mg/L and 2 mg/L based on 25 samples from a river. The mean and standard deviation of Nitrogen concentration is 7 mg/L and 3 mg/L based on 35 samples from the same river. The experimenter wants to answer the question if the Nitrogen concentration is higher than the Carbon concentration. Which of the following methods do you use? Z-test, Default Procedure Z-test, Pooled Variance Procedure T-test, Pooled Variance Procedure T-test, Default Procedure

PLEASE ANSWER ALL THE PARTS OF THE QUESTION ( THIS IS NOT A GRADED ASSIGNMENT)

please help me fill the rest thanks

You suspect that drivers for Uber/Lyft have newer cars than a driver who doesn’t drive for Uber/Lyft. Listed below are the ages of cars that you randomly sampled from the streets of Portland. If one were to conduct a hypothesis test for the difference in mean car age and mean Uber/Lyft car age, the conditions for the test would need to be checked. What conditions should you check? Check the conditions and explain how the conditions are met or not. What is the appropriate test to conduct, an independent samples t test or paired t test? Explain.   Uber/Lyft  car age 4 0 8 11 14 3 4 4 3 5 8 3 3 7 4 6 6 1 8 2 15 11 4 Non-Uber/Lyft Car age 8 8 0 3 8 4 3 3 6 11 7 7 6 9 5 10 8 4 3 4

What are two tools which test how close the dispersion of data matches the distribution shape of a normal curve?

Please sir or ma’am, please help me with hypothesis, critical region, and t statistic.

Hello,   I'm unsure how to solve part a and part c