Ateacher instituted a new reading program at school. after 10 weeks in the program it was found that the mean reading speed of a random sample of 19 second grade students was 93.9 wpm. what might you conclude based on this result? select the correct choice and ifll in the answer box in your choice below.

(round to four decimal places as needed)

a). a mean reading rate of 93.9 wpm is unusual since the probability of obtaining a result of 93.9 wpm or more is the new program is abundantly more effective than the old program.

b). a mean reading rate of 93.9 wpm is not unusual since the probability of obtaining a result of 93.9 wpm or more the new program is not abundantly more effective than the old program.

2 x t divided by n

step-by-step explanation:

don't know sorry bru

step-by-step explanation:

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

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