A psychologist specializing in marriage counseling claims that, among all married couples, the proportion for whom her communication program can prevent divorce is at least . In a random sample of married couples who completed her program, of them stayed together. Based on this sample, can we reject the psychologist's claim at the level of significance

At the level of 0.05% significance we can not reject the psychologist's claim. His claim is supported.

Explanation:

When a researcher undertakes a project to do research firstly he takes some random samples. Sample is definite a small group of numbers assume to represent the whole population. Suppose a researcher wants to do research on married couples to find the trend of divorce among them. For that reason he will randomly choose some of the couples and will draw conclusions that inter personal communication reduce the chances of divorce.

Now to establish this experiment as a fact he needs to go through a test of level of significance. Where he will get the result that his statement is established or rejected.

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