Allen's hummingbird (selasphorus sasin) has been studied by zoologist bill alther.† suppose a small group of 19 allen's hummingbirds has been under study in arizona. the average weight for these birds is x = 3.15 grams. based on previous studies, we can assume that the weights of allen's hummingbirds have a normal distribution, with σ = 0.20 gram. find an 80% confidence interval for the average weights of allen's hummingbirds in the study region. (a) find an 80% confidence interval for the average weights of allen's hummingbirds in the study region. (round your answers to two decimal places.)
i. lower limit
ii. upper limit
iii. margin of error

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.