Question

In a study to determine the effect of early child care on infant-mother attachment patterns, 100...

In a study to determine the effect of early child care on infant-mother attachment patterns, 100 infants were classified as either "secure" or "anxious" using an appropriate measurement scale. In addition, the infants were classified according to the average number of hours per week that they spent in child care. The data are presented in the table.

Low
(0–3 hours)		 Moderate
(4–19 hours)		 High
(20–54 hours)
Secure 26 37 7
Anxious 10 11 9

Given: H0: Attachment pattern and amount of time spent in child care are independent.
Ha: Attachment pattern and amount of time spent in child care are dependent.

Find:

Find the test statistic. (Round your answer to two decimal places.)

Χ2 = ??

Find the rejection region. (Round your answer to two decimal places.)

Χ2 > ??

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

The statistical software output for this problem is :

Test statistics = 6.48

Here alpha is not given

We take alpha = 0.05

Critical value is

2 > 5.99

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