Mathematics, 21.12.2019 05:31 mfr81
Asample of 161children was selected from fourth and fifth graders at elementary schools in philadelphia. in addition to recording the grade level, the researchers determined whether each child had a previously undetected reading disability. sixty-six children were diagnosed with a reading disability. of these children, 32 were fourth graders and 34 were fifth graders. similarly, of the 95 children with normal reading achievement, 55 were fourth graders and 40 were fifth graders.
a. identify the two qualitative variables (and corresponding levels) measured in the study.
b. from the information provided, form a contigency table.
c. assuming that the two variables are independent, calculate the expected cell counts.
Answers: 1
Mathematics, 21.06.2019 14:50
Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.
Answers: 1
Mathematics, 21.06.2019 16:00
Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step
Answers: 2
Mathematics, 21.06.2019 18:10
Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.
Answers: 1
Mathematics, 21.06.2019 23:00
Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next
Answers: 3
Asample of 161children was selected from fourth and fifth graders at elementary schools in philadelp...
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