Simon used a probability simulator to pull 3 colored marbles from a bag and flip a coin 50 times. the results are shown in the tables below color of marble number of times rolled blue 15 green 19 yellow 16 heads tails 26 24 using simon's simulation, what is the probability of pulling a blue marble and the coin landing tails up? 39/50 250/50 120/2500 360/2500 .

According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.