A coin is thrown 50 times. It lands on heads 31 times.
Write down the relative frequency it lands on heads.
31/50

27 (b)
Raj says,
"The coin is biased towards heads."
*
Use the data to give a reason why he might be correct.

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!