A calendar effect is an effect on investment returns, particularly in the stock market, that occurs over calendar cycles. An example is the January effect, which describes the rise in stock returns in January compared to other months. Another example is the weekend effect, which refers to the tendency of stocks to show lower returns on Monday than Friday.

Suppose you are a financial analyst. You conduct a hypothesis test to determine whether the mean monthly return for stocks in October is lower than the mean monthly return for stocks in the other months. Assume that the mean monthly return for stocks in the other months is 1.3 percentage. You obtain a sample of October monthly returns for 1,792 stocks for the period 1951-2000, which yields a sample mean of x = 0.4 percentage.

Let mu denote the mean monthly return for stocks in October. Formulate your null and alternative hypotheses by selecting the appropriate values in the blue dropdown menus that follow. H_o: H_a: The test you conduct is test.

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?