A Large Software Company Gives Job Applicants a Test of Programming

question 86

Multiple Choice

A large software company gives job applicants a test of programming ability,and the mean for the test has been 160 in the past.Twenty-five applicants are randomly selected from one large university and they produce a mean score of 165,with a standard deviation of 13.At a significance level of 0.05,does this indicate that the sample comes from a population with a mean score greater than 160?

• A)Yes.With a P-value of 0.0024,we reject the null hypothesis of μ = 160.There is sufficient evidence that the population mean score is greater than 160.
• B)No.With a P-value of 0.0664,we fail to reject the null hypothesis of μ = 160.There is not sufficient evidence that the population mean score is greater than 160.
• C)No.With a P-value of 0.9336,we fail to reject the null hypothesis of μ = 160.There is not sufficient evidence that the population mean score is greater than 160.
• D)Yes.With a P-value of 0.0332,we reject the null hypothesis of μ = 160.There is sufficient evidence that the population mean score is greater than 160.
• E)No.With a P-value of 0.9668,we fail to reject the null hypothesis of μ = 160.There is not sufficient evidence that the population mean score is greater than 160.

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Definitions:

Gender

A social construct referring to roles, behaviors, activities, and attributes that a given society considers appropriate for men and women.

P-Value

The probability that the observed results of a study could have occurred by chance alone, used in hypothesis testing to assess the evidence against a null hypothesis.

Interaction Effect

In statistical modeling, the effect on the dependent variable that is a result of the combination of two or more independent variables.

F Statistic

A ratio used in statistical analysis to compare the variance between groups with the variance within groups, often applied in an ANOVA context.