Researchers recruited pregnant women diagnosed with gum disease who had refused dental treatment because of their pregnancy. The women were randomly assigned to either rinse with mouthwash daily (n=71) or not (n = 155) to see if this simple remedy could help delay the progression of gum disease. The number of bleeding sites on the gum of each subject was recorded at baseline and again 6 months later (mean = stdev below) Difference from baseline Baseline Month 6 Variable No. of bleeding sites, per subject Rinse Controls 58.7 +27.7 62.0 - 28.8 49.7 +28.0 77.2 + 25.0 +3.3 + 16.1 +27.5 + 20.0 D To see if there is evidence that gum disease worsens after 6 months in the population of pregnant women with untreated gum disease and not using a mouthwash, which inference procedure should be used?
a) one sample or matched-pairst procedure for a mean
b) two samplet procedure for two means
c) chi-square for two-way tables
d) ANOVA for several means
e) chi-square for goodness of fit D

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

answer: 0,6

step-by-step explanation:

this would make it the y intercept.