Instruction 12 -Referring to Instruction 12

question 31

Short Answer

Instruction 12.38
The director of cooperative education at a university wants to examine the effect of cooperative education job experience on marketability in the workplace. She takes a random sample of four students. For these four, 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.
$$\begin{array} { | l | l | l | } \hline \text { Student } & \text { Coop Jobs } & \text {Job Oifer } \\\hline 1 & 1 & 4 \\\hline 2 & 2 & 6 \\\hline 3 & 1 & 3 \\\hline 4 & 0 & 1 \\\hline\end{array}$$
-Referring to Instruction 12.38,suppose the director of cooperative education wants to obtain a 95% 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:

Stratified Random

A sampling method that involves dividing the population into subgroups and randomly selecting samples from each subgroup to ensure representation.

Nonprobability Sampling

Type of sampling procedure in which one cannot specify the probability that any member of the population will be included in the sample.

Cluster Sampling

A sampling technique where the population is divided into groups, or clusters, and a random sample of these groups is selected for study.

Grocery Store

A retail store that primarily sells food, including fresh produce, meats, dairy, and pantry items, often along with household goods.