Christian was conducting a research about the effect of blended learning to students in the Cavite with 5000 population size. If he applies the sample size formula with 96% accuracy, how many respondents will be needed?

According to an article in Newsweek, the natural ratio of girls to boys is  100:105 . In China, the birth ratio is  100:116  ( 46.3%  girls). Suppose you don’t believe the reported figures of the percent of girls born in China. You conduct a study. In this study, you count the number of girls and boys born in  100  randomly chosen recent births. There are  42  girls and  58  boys born of the  100 . Based on your study, do you believe that the percent of girls born in China is  46.3 ? A.)What is the test statistic?    Round your answer to three decimal places. (z / t ) =  B.) What is the  p -value? Round your answers to four decimal places. p -value  = C.) Let  α=0.05 .      Decision: (Reject the null hypothesis / do not reject the null hypothesis)       Reason for decision: ( a < p-value / a > p-value)       Conclusion: There is (insufficient/ insufficient)  evidence to conclude that the percentage of girls born in China is different from  46.3% .

When you hear thw words “population” and “sample,” what comes first in your mind?

A certain county had a population of 34,485 people. The county hospital is interested in estimating the number of people in the county with blood type-O. To do this, they test blood samples from 228 patients. Out of this group, 10 have blood type-O. Use this sample to estimate the number of people in the county with blood type-O.