I would like some assistance with the following probability distrution and inference for mean and population exercise

I would like detailed explanation as well

26. Managers of a local supermarket in the Kingston and St. Andrew area have realized that its customer base has declined substantially in the past three months. They decide to issue 1000 questionnaires to random patrons within the shopping complex the supermarket is located on _i_n__a_[1_ effortntg understand why persons might decide to shop elsewhere. What type of data is the study collecting? a primary data b categorical data cdiscrete data d secondary data e quantitative data f continuous data 21A simple random sample of 400 iPhone users were asked if thew,r had issues with their phone after installing the new ICIS update. If it is known that in fact, 53% of iPhone users have issues with their phone after the new update, what is the prolzlalznilitvjrr that the sample proportion will be within 3% of the population proportion? AO.1151 30.7698 00.3849 0.8849 23. A fish farmer in St. Elizabeth claims that his Pink Snappers grow to an average of 12.5 inches in length. A sample of 30 fish is taken and the mean length is revealed to be 11 inches. If it is known that the standard deviation of Pink Snappers is 5.2 inches. Test at the 5% level of significance that the fish farmer has overstated the true mean length of his fish. A H0u =12; H1u (125, Test Statistics = -1.58, Pvalue= 0.9429, Conclusion We fail to reject the null hypothesis at the 5% significance level and conclude that there is enough evidence that the population mean length of Pink Snapper is greater than 11 inches. 3 H0\" =11. H1\" :11, Test Statistics = 1.58, Pvalue= 0.9429, Conclusion We reject the null hypothesis at the 5% significance level and conclude that there is enough evidence that the population mean length of Pink Snapper is Less than 12.5 inches. C H0.\" :11. Hlu s11, Test Statistics = 1.58, Pvalue= 0.0571, Conclusion We fail to reject the null hypothesis at the 5% significance level and conclude that there is not enough evidence that the population mean length of Pink Snapper is greater than 12.5 inches. D H0IJ =12_5,H1u111 Test Statistics = 1.58, Pvalue= 0.9429, Conclusion We reject the null hypothesis at the 5% significance level and conclude that there is not enough evidence that the population mean length of Pink Snapper is Less than 12.5 inches. 24. The lecturer of an Introductory Statistics class would like to evaluate her teaching styles and requests printed copies of the course evaluation survey to give each student in her class. She also states that ]_r]_o_rgl_e_r_f_r_o_[ a student to get the 5% participation grade he or she must complete the surve',r and hand it in at the end of class. If all her students completed the survey, this scenario represents a? Aparameter Bpopulation Csarnple Dcensus E-statistics 25. The department of chemistry would like to determine whether students prefer practical or theory assignments. The department emails a surveyr asking students to participate. What type of sampling method is being used? A Voluntary Response Sample 3 Stratified Response Sample CMultistage Random Sample DSimple Random Sample ECluster Random Sample