Pregunta
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Use the results from a survey of a simple random sample of 1206 adults. Among the 1206 respondents, rated themselves as above average drivers. We want to test the claim that of adults ra themselves as above average drivers Complete parts (a) through ©
a. Identify the actual number of respondents who rated themselves as above average drivers.
1073
(Round to the nearest whole number as needed.)
b. Identify the sample proportion and use the symbol that represents it

089
(Type an integer or a decimal rounded to two decimal places as needed.)
c. For the hypothesis test, identify the value used for the population proportion and use the symbol that represents it

(Type an integer or a decimal rounded to two decimal places as needed.)

Ask by Nguyen Salinas. in the United States
Mar 21,2025

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(a)
1073 respondents rated themselves as above average drivers.
(b)
Sample proportion .
©
Population proportion .

Solución

(a)
The number of respondents who rated themselves as above average drivers is
(b)
The sample proportion is represented by the symbol and is given by
©
For the hypothesis test, the population proportion is represented by the symbol and is given as

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Bonus Knowledge

The actual number of respondents who rated themselves as above average drivers is calculated by taking of . Thus, , which, when rounded to the nearest whole number, gives us 1073.
The sample proportion, represented by , is calculated as the number of respondents rating themselves above average divided by the total sample size. This gives us:
.
For the hypothesis test, the value used for the population proportion, represented as , is based on the claim . Calculating this, we find:
.

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