The regulation size of an Olympic swimming pool is 2,500,000 liters. A normal soda can hold 355mL of fluid.
a) What is the volume of an Olympic Swimming pool in scientific notation?
b) What is the volume of a soda in scientific notation using the same units of
measure?
c) How many soda cans would be required to fill an Olympic sized swimming pool?
Make sure to show your work in Scientific Notation, and express your answer in
scientific notation.

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.