Which of the following are assumptions underlying repeated-measures ANOVA? Check all that apply. 0000 The population variances for each of the treatment groups are equal. The populations from which the samples were taken are normally distributed. The population variances for each of the treatment groups differ. The populations from which the samples were taken follow an F distribution.

Questions13-14: Adult male polar bears are expected to weigh, on average, 370 kg. A polar bear's primary source of food is seals and other marine animals, which they hunt from a platform of sea ice. Scientists are concerned that global warming is melting these platforms earlier in the year, reducing the time polar bears are able to hunt and forcing them inland without the necessary fat reserves built up to survive summer and fall. The US Geological Survey (USGS) conducted a study in the Southern Beaufort Sea to investigate whether climate change has appeared to negatively impact the weight of polar bears. Eighty-three adult male polar bears were captured between March and May of the years 1990 and 2006 and their weights were recorded. The sample mean weight was 324.6 kg, and the sample standard deviation was 88.3 kg. 13. Use the Theory-Based Inference applet to determine the p-value to investigate whether climate change has appeared to negatively impact the weight of polar bears. A.…

A man launches his boat from point A on a bank of a straight river, 4 km wide, and wants to reach point B, 4 km downstream on the opposite bank, as quickly as possible (see the figure below). He could row his boat directly across the river to point C and then run to B, or he could row directly to B, or he could row to some point D between C and B and then run to B. If he can row 6 km/h and run 8 km/h, how far (in km) downstream from C should he land to reach B as soon as possible? (We assume that the speed of the water is negligible compared to the speed at which the man rows. Hint: This question is based on EXAMPLE 4 in Section 4.7 of the textbook. However, for this question, the textbook has added a challenge which may require an unexpected solution. Look for itl) A km from C

Suppose a company has fixed costs of $46,800 and variable cost per unit of 2/5 x + 333 dollars, where x is the total number of units produced. Suppose further that the selling price of its product is 2159 − 3/5 x dollars per unit. (a) Find the break-even points. (Enter your answers as a comma-separated list.) x =