1. According to a PEW report published on April 15, 2021, based on a survey of 5,109 US adults in April 2021, "72% of Americans say Joe Biden has done and excellent or good job managing the manufacture and distribution of COVID-19 vaccines to Americans." Answer the give problems under the theory of simple random sampling. (a) Which approximation is more appropriate to model this proportion? z (normal-curve) or t (student-curve)? Be sure to justify your response in a few concise sentences. (b) Estimate the 94% confidence interval. Be sure to justify your solution both graphically and analytically.

Q: 4. Evaluate the following limit. Vr3 +9 2x2 -5x +3 if x 3,

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Q: answer question 2

A: As per the question we are given the following recurrence relation : T(n) = 6T(n/2) + n  ,  T(1) = 1…

Q: Can you just do question c

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Q: what is the solution

A: The series diverges.

Q: answer question 4.

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Q: Can you please answer this question

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Q: Will you show me step by step how to answer this, please?

A: Expected value:The expected value of a random variable is the sum of the possible values that the…

Q: where is number 6?

A: Given data :  Desk arranged in 4 rows and 4 columns Probability  of success (p) = 4/16= 1/4 = 0.25…

Q: Please give answers in step by step

A: Step 1: Analyze the problem. Step 2: Check if there's lacking. Step 3: Give a suggestion

Q: Please answer all.

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Q: 14. For f(x) = x' – 6x² +9x , identify the critical points and inflection points A) Critical Points:…

A: Dear student, Since you have posted two questions, as per our policy we will answer first question.…

Q: Can you answer question 8 too

A: Given data : Four groups ,K = 4 N = 32Education : { 62,81,75,58,67,48,26,36 } Business management :…

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.