A study was conducted with the objective of determining the effect of two different strength-training programs, one involving the use of a balance ball and the other using stationary exercise equipment, on blood pressure and cholesterol levels in women over the age of 60. Eighty women over the age of 60 were identified and randomly divided into two equal-sized experimental groups. Each member of the two groups was trained and allowed to follow the prescribed routine for 8 weeks. The subjects were aware of the purpose of the study but not that there were two different treatment groups involved. The cholesterol levels and blood pressure for subjects were measured at the start and at the end of the 8 weeks. The experimenter and the medical technician were not told to which group any of the subjects were assigned. This is an example of an attempt to conduct

The answer is "a double-blind randomized experiment".

Step-by-step explanation:

In this question, the above option is right, since we realize here how we have randomly separated image into three accurately evaluate, it implies whether random sampling is oresepr and also that the citizens, as well as the medical technician, have no idea whatever the party has got, implying their two-blind diagnosis.

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45 

The total nom of  code that can be used is equal to 5+3 = 8

The answer is in the image 

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

The solution is in the following image

The answer is in the image 

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

The answer is in the image 

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales