4. The vaccination rates against Covid-19 and the current ICU hospitalisation rates from Covid-19 over the last few weeks have been gathered for 13 regions of similar population size and density in...

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Extracted text: 4. The vaccination rates against Covid-19 and the current ICU hospitalisation rates from Covid-19 over the last few weeks have been gathered for 13 regions of similar population size and density in the European Union. An investigation is to be done to see if the vaccination rates are affecting the ICU hospitalisation rates. (a) State the Null and Alternative Hypotheses for an appropriate test to deter- mine if the two variables are correlated. (b) The correlation coefficient calculated from the data wasr = (0.919. Explain how already having the value of r from the previous question part will affect the structure of your test. (c) Carry out an appropriate test to determine if the two variables are corre- lated.