The following table shows the number of heart beats for 444 animals. For example, the pig's heart beats 225225225 times in 333 minutes. Animal Heartbeats Minutes
Pig 225225225 333
Horse 180180180 444
Cow 520520520 888
Dog 540540540 666
Which animal's heart beats at a rate of 656565 beats per minute?

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.