The amount of money college students spend each semester on textbooks is normally distributed with a mean of $195 and a standard deviation of $20. suppose you take a random sample of 100 college students from this population. there would be a 68% chance that the sample mean amount spent on textbooks would be between what two values? explain just how you arrived at your answer.

Given abcd ac=38 and ae=3x+4 find the value of x

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?