12th GRADE STATISTICS Reports claim 15.1% of adults are smokers, but Jane suspects the proportion of smokers has decreased since the numbers were taken. She takes a random sample of 200 adults and found 10.3% were smokers. The null hypothesis is p = 0.151 and the alternative hypothesis is p < 0.151

Which shows the correct work for checking that there are at least 10 expected successes?

A. 200(0.151)
B. 200(0.897)
C. 200(0.849)

with this answer, what would be the standard deviation of the sampling distribution?​

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered