can you help with this im having some trouble getting it right.

1.) Sociologists say that85%of married women claim that their husband's mother is the biggest bone of contention in their marriages (sex and money are lower-rated areas of contention). Suppose thattenmarried women are having coffee together one morning. Find the following probabilities. (For each answer, enter a number. Round your answers to three decimal places.)

(a)All of them dislike their mother-in-law.

(b)None of them dislike their mother-in-law.

(c)At leasteightof them dislike their mother-in-law.

(d)No more thansevenof them dislike their mother-in-law.

2.) Assume thatxhas a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.)

=20;=3.8

P(x30) =

3.)last one sorry

Raul received a score of73on a history test for which the class mean was 70 with a standard deviation of4. He received a score of76on a biology test for which the class mean was 70 with standard deviation7. On which test did he do better relative to the rest of the class?

biology, history, or the same.

i think the correct answer is the same right?