Consider an experiment on the dose-response rates between fo…

Consider an experiment on the dose-response rates between four antibiotics, W, X, Y, and Z applied randomly at the same concentration to cultured bacteria, and the percent reduction in the bacterial population was recorded.  The assumptions were met to use the ANOVA. The data were strong evidence of different population mean reductions across the four antibiotics (P

Based on data from the Vision Council, 21% of adults in the…

Based on data from the Vision Council, 21% of adults in the US require vision correction. If 8 adults are randomly selected from the US. The probability that exactly 2 of them require vision correction is (Fill in the numerical value. Round to one decimal place).           

The table below shows the results for 120 rolls of a die. Th…

The table below shows the results for 120 rolls of a die. These results will be used to test if the die is fair. The null hypothesis would state that the population proportion for each result is:   Result 1 2 3 4 5 6 Frequency 24 14 28 18 20 16   (Fill in the numerical value. Report the value with 2 decimal places.) 

The table below shows the gender and selected drink of 100 p…

The table below shows the gender and selected drink of 100 persons randomly sampled to choose between two coffee drinks, A and B. The researcher wants to test: H0: Gender and drink choice are independent HA: Gender and drink choice are not independent   Drink A Drink B Men 25 20 Women 30 25 The observed chi square test statistic is:   (Fill in the numerical value. Report the value with 2 decimal places.)