Could I have help with the red highlighted questions? Please explain how you got the answers in great detail.

Questions 24-33: In a random sample of 100 patients with biopsy-confirmed breast cancer, a study examines cancer detection rates with 50 previously collected, two-dimensional (2D) mammograms compared to detection rates in 50 previously collected, three-dimensional (3D) mammograms. The alpha selected for this pilot study is 0.10, and the power is 0.80. 24. Write a null and an alternative hypothesis for this study. 204 25. What is the independent variable? What level of measurement is it? 26. What is the dependent variable? 27. If cancer detection is measured as yes or no, what level of measurement is this variable? 28. The pilot study reports a chi-square of 2.46. Is there a significant difference between cancer detection rates with these two screening mechanisms? The study reports 2D mammograms detected 70% of cancers and 3D mammograms detected 90% of cancers with a p = 0.12. What decision should the researcher make about the null hypothesis? In a larger study with the same parameters, 2D mammograms detected 75% of cancers and 3D mammograms detected 91% of cancers with a p = 0.01. What decision should the researcher make about the null hypothesis? Knowing the results of the larger study should make the researcher wonder if the conclusion of the smaller pilot study was what type of error? Additional studies show the sensitivity of the 3D mammogram is 94% and the PPV is 98%. You have a patient with a positive 3D mammogram, indicating a high risk of cancer. She wants to know what the chances are that she actually has cancer. What can you tell her