Find a 90 Percent Confidence Interval for the Difference Between

question 116

Short Answer

Find a 90 percent confidence interval for the difference between the proportions of group 1 and group 2. Let p₁ represent the population proportion of the people in group 1 who like a new mobile app, and let p₂ represent the population proportion of the people in group 2 who like a new mobile app. = .21, = .13, n₁ = 300, and n₂ = 400.

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Definitions:

Totem Pole

A carved wooden pole, typically created by the Indigenous peoples of the Pacific Northwest Coast of North America, that represents and commemorates ancestry, histories, people, or events.

Ancestry

The lineage or heritage of an individual, referring to the family descent and the cultural and ethnic background from which one comes.

Crest Poles

Tall, carved wooden poles produced by Indigenous peoples of the Pacific Northwest to represent family lineage, histories, rights, and privileges.

Oka Crisis

A 1990 land dispute between a group of Mohawk people and the town of Oka, Quebec, Canada, which highlighted Indigenous land claims and rights.