Paint used to paint lines on roads must reflect enough light to be clearly visible at night. researchers have 2 new types of paints they want to test paint type a and paint type b. for each paint type, they tested if there was statistical evidence the average reflectometer reading is greater than 35. to test each type of paint, they used 15 paint samples. further, suppose the standard deviation is the same for both types of paints. the sample mean for paint type a was 39 and the sample mean for paint type b was 41.5. for both statistical tests, the significance level is set to .05.

which of the following is true:

a) if they fail to reject the null hypothesis for paint type a we can conclude there is statistical evidence the average reflectometer for type a paint is 35.

b) the p-value for the type b paint test is smaller

c) they rejected the null hypothesis for both paint types

d) exactly two of the statements above are true.

e) none are true.

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.

unless you made a typo, the answers are both a and c.

step-by-step explanation:

1.5/3 is .5 whereas 3/9 is .3333333 not proportional

22/33 is .66666 and 4/6 is also .66666 proportional

2/4 is .5 whereas 142/213 is .66666 not proportional

14/7 is 2 and 7/3.5 is also 2 proportional

you could've also checked it by doing this simple division:

if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:

when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.

there are many ways to do this so i wanted to show you some possible ways.

can i see a photo of the question so i can you?

well, if it's triangular garden, the triangle could represent the garden.