A pharmaceutical company wants to test if a new drug reduces the average recovery time for patients with a certain illness. The previous average recovery time was 14 days. After conducting a clinical trial, the company collects data for six months. Ho: mu = 14 vs. Ha: mu < 14 The p-value for this trial is 0.84. If the true average recovery time has decreased, what type of error is this?
Read DetailsTatum is interested in determining whether customer satisfaction differs between the Atlanta (A) and Boston (B) locations for a new sustainable shoe store. He randomly selected ten customers at each location and conducted a classical significance test of his claim. The customers were there during the weekdays. Choose the appropriate output below. Please type the responses directly into the space below. Make sure to include the following: Problem: Plan: Data: Variable: Missing: Parameter: Analysis: Hypotheses: Assumptions: Name of test Test Statistic p-value Conclusion: Can you extend to the population? Interpretation: Next Questions:
Read DetailsUse this image to answer the following questions. Be sure to label each question in your response. Question A – Identify the basic shape of this organism. Question B – Name an organism (genus and species) that displays this cell morphology?
Read DetailsA school tested a new study‑prep app by having each student take a practice exam before and after using the app for two weeks. The researchers computed the paired differences (After – Before) and constructed a 99% t‑confidence interval for μ_diff, obtaining (2.4, 7.1) points. Interpret this interval. With 95% confidence, the researcher concludes that the [word2] mean score improvement due to the study app is between 2.4 and 7.1 points, meaning students scored [word3] after using the app.
Read Details