Answer:
Answer = a. Explanatory variable: history of sleep apnea; and outcome: Alzheimer’s status.
Step-by-step explanation:
This is Case-Control analytical study where the cases are the 50 participants with Alzheimer’s and the control are the 50 participants without Alzheimer’s. This type of study requires the formulation of certain hypothesis in an attempt to investigate the possible factor (sleep apnea) of a particular health condition (Alzheimer’s disease). The outcome of the studies will explain the roles of specific factors in the incidence and prevalence of a disease. This type of study investigates the hypothesis that there is a relationship between suspected causal factor (sleep apnea: which is referred to as the explanatory variable) and a disease (Alzheimer’s disease: which is referred to as the outcome variable). The study group is selected on the basis of presence or absence of the ‘outcome variable’ which is the disease where the factors (explanatory variable) are already present or not in the case (50 participants with Alzheimer’s) and its controls (50 participants without Alzheimer’s)
Answer: 13
Step-by-step explanation:
represent the first integer as x
Since they are consecutive, you can represent the others as x+1, x+2, and x+3.
Write the equation
x + (x +1) + (x+2) + (x+3) = 58
Combine like terms
4x + 6 = 58
Solve for x
4x= 52
x=13
There all 9's therefore they all have the same value
Answer:
1. 18 eggs is $3.06
2. 3 pounds is $4.47
3. If his drawing is 8 inches long it will be 6 inches wide
Step-by-step explanation:
12 eggs is $2.04 so half of 12 is 6 so half of 12 eggs would be $1.02 so 18 eggs is $3.06