Q9 to 12 only need correct option ..no explanation so send me ASAP thanks

9. If the degrees of freedom in a tdistribution become very large, A. the t-values and the z-values are almost the same B. the sample size must be very small C. the population size must be very large D. the sample mean approaches zero 10. A random sample of 150 people was taken from a very large population. Ninety of the people in the sample were female. The standard error of the proportion is A. 0.0016 B. 0.2400 C. 0.1600 D. 0.0400 11. A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations will be taken. The probability that the sample mean will be between 30.54 and 88.9 is A. 0.0347 B. 0.?200 C. 0.951 1 D. 8.3600 12. The probability that a continuous random variable takes any specic value . A. is equal to zero B. is at least 0.5 C. depends on the probability density function D. is very close to 1.0