past year for each person. The data are as follows: Control Group Dog Owners 11 8 4 6. 7 7 4 10 8 9 Is there a significant difference in the number of doctor visits between dog owners and control subjects? Use a two-tailed test with a = .05. а.
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
![Siegel (1990) found that elderly people who owned dogs were less likely to pay
visits to their doctors after upsetting events than were those who did not own
pets. Similarly, consider the following hypothetical data. A sample of elderly dog
owners is compared to a similar group (in terms of age and health) who do not
own dogs. The researcher records the number of visits to the doctor during the
past year for each person. The data are as follows:
12.3
TT
Control Group
Dog Owners
11
8
4
7
7
4
10
8
6
9.
Is there a significant difference in the number of doctor visits between
dog owners and control subjects? Use a two-tailed test with a = .05.
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