A Department Store Has Determined That 25% of All Their

question 9

Short Answer

A department store has determined that 25% of all their sales are credit sales. A random sample of 75 sales is selected.
a.What is the probability that the sample proportion will be greater than 0.34?
b.What is the probability that the sample proportion will be between 0.196 and 0.354?
c.What is the probability that the sample proportion will be less than 0.25?
d.What is the probability that the sample proportion will be less than 0.10?

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Definitions:

Maintenance Rehearsal

A cognitive process involving the repetition of information to keep it within working memory or to encode it for storage in long-term memory.

Physical Features

Characteristics of the body's appearance, including height, weight, skin color, hair type, and facial structure.

Stimulus

Any event or situation that evokes a response from an organism.

Rote Repetition

A memorization technique based on the repeated reading or recitation of material.