You are tasked with determining if there is a difference in the average number of years of education of men and women in California. You take a random sample of 1,800 men and 3,200 women. The average education in your sample of men is 13 years with a sample standard deviation of 3 years. The average education in your sample of women is 14 years with a sample standard deviation of years. a. What is your null hypothesis?b. What is your alternative hypothesis?c. State your conclusion regarding the difference in average education, using 5% significance. d. What is the 95% confidence interval for the difference in average wages?

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?