Are you searching for a reliable professional to Take My Exam For Me? You’ve landed in the right place! At LiveExamHelper.com, we specialize in delivering top-quality online exam assistance to ensure you achieve the grades you desire. Our team of experienced experts is available 24/7 to provide you with accurate and timely solutions. Below, we present a couple of master-level statistics problems, along with detailed expert solutions, to showcase the quality of service we provide.
Problem 1: Hypothesis Testing & Decision Making
A company claims that the average time spent by users on its website is more than 15 minutes per session. A sample of 40 users was observed, and their average session time was found to be 16.2 minutes with a standard deviation of 3.5 minutes. Test the company’s claim at a 5% significance level using the appropriate hypothesis test.
Expert Solution:
To test this claim, we formulate our hypotheses as follows:
Null Hypothesis (H₀): (The true mean session time is 15 minutes or less)
Alternative Hypothesis (H₁): (The true mean session time is greater than 15 minutes)
Since the sample size is large (n = 40), we use a one-sample t-test:
Substituting the values:
The critical t-value for a one-tailed test at a 5% significance level with 39 degrees of freedom is 1.685 (from t-tables). Since 2.17 > 1.685, we reject the null hypothesis.
Conclusion: There is sufficient evidence to support the claim that the average session time exceeds 15 minutes.
Problem 2: Regression Analysis & Predictive Modeling
A researcher is analyzing the relationship between the advertising budget (X) and product sales (Y) in thousands of dollars. Using a sample of 50 data points, the following simple linear regression equation was obtained:
If the advertising budget is increased by $10,000, predict the change in product sales.
Expert Solution:
The regression equation provided is:
Here, the coefficient of X (2.8) represents the change in product sales for every unit increase in the advertising budget. Since X is measured in thousands of dollars, increasing the budget by $10,000 (or 10 units) results in:
Conclusion: An increase of $10,000 in the advertising budget is expected to result in an increase of $28,000 in product sales.
Why Choose LiveExamHelper.com?
Guaranteed Accuracy: Our experts ensure that every solution is correct and well-explained.
Timely Delivery: We adhere to deadlines and provide real-time assistance.
Affordable Pricing: Our services are budget-friendly without compromising quality.
24/7 Availability: Reach out anytime and get your queries resolved instantly.
If you're looking for professional assistance, don’t hesitate to contact us. Let us help you excel in your statistics exams with confidence!
