Mathematics, 20.12.2019 23:31 aduncan3426
In a given year, the rate of flu infection for the general public was 8.3%. in sample of 200 people who received the flu vaccine, the rate of flu infection was just 3.5%. what conclusion should you draw?
a. do not reject the null hypothesis; flu rates for vaccinated people are not lower
b. reject the null hypothesis; flu rates for vaccinated people are lower
c. do not reject the null hypothesis; flu rates for vaccinated people are lower
d. reject the null hypothesis; flu rates for vaccinated people are not lower
Answers: 2
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Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain
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