Answer Happy

Let us assume that the number of COVID-19 casualties per 1 million inhabitants in different countries follows a normal distribution with unknown mean u and a variance equal to 10002. WHO specialists wish to construct the most powerful test to verify the null hypothesis that u 1800 against the alternative that u = 1000, based on a random sample of 64 countries at a 0.02 significance level. - • The critical region of this MP test has the form { X }, and if the sample average amounted to 1500, the WHO would conclude that The power of the MP test constructed in the previous point amounts to and the power of a test with the same critical region but for an alternative hypothesis that u = 900 would be Note. Please input numbers in decimal notation, rounded to two digits.