Examples of primary groups are families, friends, peers, neighbors, classmates, sororities, fraternities, and church members. These groups are marked by primary relationships in which communication is informal. Members of primary groups have strong emotional ties. They also relate to one another as whole and unique individuals.
In contrast, secondary groups are those in which individuals do not interact much. Members of secondary groups are less personal or emotional than those of primary groups. These groups are marked by secondary relationships in which communication is formal. Members of secondary groups may not know each other or have much face‐to‐face interaction. They tend to relate to others only in particular roles and for practical reasons. An example of a secondary relationship is that of a stockbroker and her clients. The stockbroker likely relates to her clients in terms of business only. She probably will not socialize with her clients or hug them.
Answer: Vesicovaginal fistula (VVF)
Explanation: This is an abnormal opening between the bladder and the woman’s private part.
Answer:
The disorder is agoraphobia, the experience is a panic attack.
Explanation:
The fear of situations where the person believes that the environment they are in is somehow unsafe and they cannot escape it. The environment can be any place it might be anything outside a person's home.
Here, Mr. Belshy cannot leave a certain region near his house and does not want to experience the same situation in a car or bus. Hence Mr. Belshy has agoraphobia and the thing he experiences is a panic attack.
Answer: (11.95, 14.11)
Explanation:
Let x be a random variable that represent the number of years of education.
Given: Sample size : n= 26
Sample mean : 
Sample standard deviation : s = 3.22
Significance level : 
Degree of freedom: df = n-1 = 25
Critical t-value for
and df = 25 will be

90% confidence interval for mean:

A 90% confidence interval for the mean number of years of education = (11.95, 14.11)
He was aware of the little knowledge of man and the vastness of knowledge