SCENARIO 12-3
the Director of Cooperative Education at a State $\begin{array} {ccc}\text { Student } & \text { Coop Jobs } & \text {Job Offer }\\ 1 & 1 & 4 \\ 2 & 2 & 6 \\ 3 & 1 & 3 \\ 4 & 0 & 1 \end{array}$

question 195

Short Answer

SCENARIO 12-3
The director of cooperative education at a state college wants to examine the effect of cooperative education job experience on marketability in the work place.She takes a random sample of 4 students.For these 4, she finds out how many times each had a cooperative education job and how many job offers they received upon graduation.These data are presented in the table below. $\begin{array} {ccc}\text { Student } & \text { Coop Jobs } & \text {Job Offer }\\ 1 & 1 & 4 \\ 2 & 2 & 6 \\ 3 & 1 & 3 \\ 4 & 0 & 1 \end{array}$
-Referring to Scenario 12-3, suppose the director of cooperative education wants to construct a95% confidence-interval estimate for the mean number of job offers received by students who have had exactly one cooperative education job.The t critical value she would use is _.

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Definitions:

Significance Level

A threshold in hypothesis testing that determines the probability of rejecting a true null hypothesis, typically set at 0.05 or 0.01.

Sinus Drug

A medication specifically designed to treat symptoms associated with sinus problems, such as congestion and pain.

Degrees of Freedom

In statistics, it refers to the number of independent values or quantities which can be assigned to a statistical distribution.

F Statistic

A value calculated in ANOVA that compares the ratio of variance between groups to the variance within groups to test significance.