The factors that affect the visibility of powered two-wheelers (ptws)long dashmotorcycleslong dashon the road were investigated in a study. a visual search study was conducted in which viewers were presented with pictures of driving scenarios and asked to identify the presence or absence of a ptw. of interest to the researchers is the detection rate, that is, the proportion of pictures showing a ptw in which the viewer actually detected the presence of the ptw. suppose that, in theory, the true detection rate for pictures of ptws is 0.72. the study revealed that in a sample of 2 comma 285 pictures that included a ptw, only 1 comma 540 were detected by the viewers. use this result to test the theory at alphaequals0.05.

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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b if for most of the graph

d if y intercept

step-by-step explanation:

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step-by-step explanation:

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