3- Is climate change an important issue? Use the following samples to answer the questions. Gender yes no Male 250 140 110 Not Male 300 220 80 a. Construct and interpret a 95% confidence interval for the difference between the two population proportions. b. Test if a larger proportion of Not Male believe climate change is an important issue. Calculate and interpret the p-value. (a is not given)

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Q: Question 1

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Q: 2. Discuss the effect of following on the width of a confidence interval. a. Confidence level c.…

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Q: c) i: Calculate the average and median to the results. ii: Find a 95% confidence interval for µ.

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A: We have given that Sample size n1=400 ,n2=200 And sample proportion p1= 0.46 ,p2^=0.34

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.