Give a 95%95% confidence interval for the difference in mean weight change after 1515 weeks for obese children who receive professional food counseling and obese children who do not. Express the interval in the form lower bound to upper bound. (Enter your answers rounded to two decimal places.)

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%