A study of sleep patterns randomly selected participants in the study to sleep in either a dark room or a room with light.

Which element of experiment design is known to be a part of this study?

A.

blinding

B.

replication

C.

randomization

19. In scientific notation, 670,000,000 + 700,000,000 = ? A. 1.37 * 10-9 B. 1.37 x 107 C. 1.37 x 108 D. 1.37 10° E. 137 x 1015

The wrestling team needs to calculate the area of a round wrestling mat. Which formula should they use?

To synthesize information regarding when books were written, Alex should create a a. Timeline c. Venn diagram b. Chart d. None of these

One barge from inland waterways, inc. can carry a load of 2655 lb. records of past trips show that the weights of the cans that it carries have a mean of 102 lb and a standard deviation of 10 lb.

Catalina uses a 3 1/2 ounce packet of seasoning for her steaks. The packet contains of 1 1/3 ounces of garlic powder and 1 1/4 ounces of onion powder. The remainder of the packet consists of black pepper.

A rectangular field has a length of 0.26 miles and a width of 0.48 miles find the area of the field

The following table shows the time in various cities when it is 4:00 a. m. in New York. New York 4:00 a. m. San Juan 5:00 a. m. Buenos Aires 6:00 a. m. Dublin 9:00 a. m. Rome 10:00 a. m. Istanbul 11:00 a. m. Saint Petersburg 12:00 p. m.

Adventura needs to know animals weight in kilograms is 20 pounds is about 9 kilograms and a dog weighs 30 pounds use a ratio table to find the dogs weight in kilograms explain your reasoning

What angles does a triangle have

The denominator of a fraction is 4 more than its numerator. when 12 is added to this fraction, the resulting fraction's denominator is twice the denom