An industrial plant dumps its waste into a nearby river, but claims that it is not impacting the native fish
that live in the river. You have measured the calcium concentration from a random sample of 18 locations in the river and calculated a mean of 97.4 mg/L, with a standard deviation of 4.1 mg/L. The fish are able to tolerate calcium concentrations up to 95 mg/L.
a. Assuming a normal distribution, calculate a 95% confidence interval for the mean calcium concentration in the river.
b. Do your data suggest that the fish are being negatively impacted? Explain your answer.
c. Assuming that you held everything else constant, how would the width of the confidence interval change if you doubled your sample size from 18 to 36? Would it become wider, narrower, or stay the same?
Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”
The post An industrial plant dumps its waste into a nearby river, but claims that it is not impacting the native fish that live in the river. You have measured the calcium concentration from a random sample of 18 locations in the river and calculated a mean of 97.4 mg/L, with a standard deviation of 4.1 mg/L. The fish are able to tolerate calcium concentrations up to 95 mg/L. appeared first on Superb Professors.
Case study one page Case study one page Case study one page Case study one…
Business Calculus quiz that is 10 questions and has an hour time limit. Must be…
Write a 175- to 265-word response to the following: What constitutes “robust interoperability,†and what…
For this News Briefing Quest task , pick and analyze a U.S. political news article…
ACC 610 Milestone TwoGuidelines and Rubric This is the secondof three milestone assignments that will…
Please answer the questions in the attachment. I have sent you the required materials. Send…