The mean act composite score in a recent year is 20.8 with a standard deviation of 5.6. a
random sample of 36 act composite scores are selected. what is the probability the mean
score for the sample is less than 21.6
o 0.805
o 0.557
o 0.195
o 0.443

Miguel bought a movie ticket that cost $5. he also bought popcorn and a bottle of water. how much did miguel spend altogether?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

True or false look at the picture pls : /