Instructiоns Reаd the scenаriо belоw, аnd answer the next 2 questions that follow based on this scenario. Scenario A school administrator is analyzing the results of a standardized math test taken by 200 students. The mean score on the test is 75, with a standard deviation of 8. The administrator suspects that the scores follow a Normal distribution and wants to use this information to predict how many students scored within certain ranges and identify potential outliers.
Instructiоns Reаd the scenаriо belоw, аnd answer the next 2 questions that follow based on this scenario. Scenario A company conducted a study to assess the effectiveness of their new marketing campaign for a smartphone. They collected data from 1,000 customers who made recent purchases. The company reported that 70% of customers who saw the campaign ended up purchasing the smartphone within two weeks. However, the report did not include any information about the types of customers surveyed, such as their age, income, or previous purchase history. The company concluded that the marketing campaign was highly successful and recommended using it for future product launches.
Instructiоns Reаd the scenаriо belоw, аnd answer the next 2 questions that follow based on this scenario. Scenario A hospital wants to evaluate whether a new type of physical therapy speeds up recovery for patients with knee injuries compared to the standard therapy. The hospital selects 100 patients with similar knee injuries. Half of the patients are randomly assigned to receive the new therapy, while the other half receive the standard therapy. The doctors and patients do not know which therapy each patient receives to prevent bias. After six weeks, the recovery progress of all patients is measured and compared.