A scientist is observing the grizzly bear population in two state parks The parks each have 150 bears when he begins observing them. The population in Park A increases
by 20% each year. The population in Park B decreases by 20% each year.
In each equation, y represents the bear population with respect to a number of years,
X.
Drag each equation to show whether it can be used to represent the bear population in
Park A, Park B, or neither of these.

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.