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 18 second grade students was 92.9 wpm. what might you conclude based on this result? select the correct choice below and fill in the answer boxes within your choice. (type integers or decimals rounded 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.

answer: .75 km

step-by-step explanation:

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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x = 3 ± √(5+y)