Biology, 13.07.2019 00:40 alonzob2367
According to the american red cross, 10.7% of all connecticut residents have type b blood. a random sample of 25 connecticut residents is taken. x = the number of ct residents that have type b blood, of the 25 sampled. what is the standard deviation of the random variable x ?
Answers: 1
Biology, 21.06.2019 19:00
Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.
Answers: 1
Biology, 21.06.2019 20:00
Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data
Answers: 1
Biology, 21.06.2019 22:00
Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.
Answers: 1
Biology, 22.06.2019 01:30
Compare the composition of the moon's surface with the composition of the earth's surface.
Answers: 2
According to the american red cross, 10.7% of all connecticut residents have type b blood. a random...
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