A random sample of 102 lightning flashes in a certain region resulted in a sample average radar echo duration of 0.86 sec and a sample standard deviation of 0.35 sec. Calculate a 99% (two-sided) confidence interval for the true average echo duration μ. (Round your answers to two decimal places.)

Which of the following expressions is equal to 2x^2+8

Will give brainliest plz hurry lexie surveyed 4 teenagers to find out approximately how many hours, per week, they read for fun, and how many siblings they have. brooke said she reads about 10 h a week for fun, and that she has 5 siblings. celia said she has 1 brother and 1 sister and reads for fun about 3 h each week. henry said he has 2 brothers and reads for fun about 30 min each week. jude said he doesn't read for fun and has 3 brothers and 3 sisters. use this information to complete the data table. express your answers as whole numbers or decimals. name hours of fun number of siblings brooke celia __ henry jude

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c