What is the slope of the trend line, and what is it's meaning in practical terms? During which year was the life expectancy clearly higher than would have been expected from the linear trend? If the linear trend established by these data persisted through 2020, what would the life expectancy be for a child born in 2020? (round your answer one decimal place) If the linear trend established by these data persisted through 2300, what would be the life expectancy of a child born in 2300? (round your answer one decimal place) Does this make sense?

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Simplify the following expression 48^1/2

Azul has 4 green picks and no orange picks.you add orange picks so that there are 2 orange picks for every 1 green pick.how many picks are there now.