Mathematics
West Coast University Corona Virus Screening Test Questions

West Coast University

Question Description

I’m studying for my Statistics class and don’t understand how to answer this. Can you help me study?

The questions are attached. You must complete all six steps for each question and show calculations and explain your answers.

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Name ___________________________ Period _______ U7-Absent Version At-home Learning Statistics You must complete the 6 steps for each question to receive full credit. 1. The makers of a corona virus screening test claims that it will detect the virus in 92% of people with the disease. 150 randomly selected people who have previously been diagnosed are given the screening test, and 128 are identified as having the corona virus. Does this finding provide evidence that the screening test detects the virus at a rate different from the 92% claimed by the manufacturer? a) State hypotheses and describe the parameter (p) b) Calculate the test statistic c) Draw and shade the curve e) State result f) Write conclusion in context of the problem d) Calculate the p-value Test Statistic 𝑍= (𝑝̂ βˆ’ 𝑝) βˆšπ‘(1 βˆ’ 𝑝) 𝑛 2. Suppose a polling organization wants to report their results using a 90% confidence level with a margin of error of Β±4 percentage points. Find the number of people they would need to interview.  m = z *   p (1 βˆ’ p ) οƒΆ οƒ· οƒ· n οƒΈ 3. USA Today reported that 37% of adult drivers admit that they often drink coffee when driving. This was based on a random sample of 115 adult drivers. What is the 93% confidence interval for the true proportion of adult drivers that often drink coffee while driving? (be sure to include your conclusion statement) 𝑝̂ (1 βˆ’ 𝑝̂ ) πΆπ‘œπ‘›π‘“π‘–π‘‘π‘’π‘›π‘π‘’ πΌπ‘›π‘‘π‘’π‘Ÿπ‘£π‘Žπ‘™ = 𝑝̂ Β± 𝑧 βˆ— √ 𝑛 ...
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madushan (3739)
Carnegie Mellon University

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