A researcher collated data on americans’ leisure time activities. She found the mean number of hours spent watching television each weekday to be 2. 7 hours with a standard deviation of 0. 2 hours. Jonathan believes that his football team buddies watch less television than the average american. He gathered data from 40 football teammates and found the mean to be 2. 3. Which of the following are the correct null and alternate hypotheses?.

Late at night some traffic signals change patterns and become ?

Does howard university superscore act

Heights of men on a baseball team have a bell-shaped distribution with a mean of 177 cm and a standard deviation of 6 cm. using the empirical rule, what is the approximate percentage of the men between the following values? a. 159 cm and 195 cm b. 165 cm and 189 cm a. 89% of the men are between 159 cm and 195 cm. (round to one decimal place as needed.) b. 89% of the men are between 165 cm and 189 cm. (round to one decimal place as needed.)