Question

Use the results from a survey of a simple random sample of 1269 adults. Among the 1269 respondents, 74% rated themselves as above average drivers. We want to test the claim that of adults rate themselves as above average drivers. 10 Complete parts (a) through (c). .

a. Identify the actual number of respondents who rated themselves as above average drivers.

Answer 1

To identify the actual number of adults who rated themselves as above average drivers, 74% of the 1269 sample size were calculated, resulting in approximately 939 respondents.

Step-by-step explanation:

The student has asked to identify the actual number of respondents who rated themselves as above-average drivers from a simple random sample of 1269 adults, where 74% rated themselves as above average. To calculate this, use the following steps:

1. First, convert the percentage to a decimal by dividing by 100. This gives us 0.74.
2. Then, multiply the sample size (1269) by this decimal: 1269 * 0.74.
3. This calculation will give us the actual number of respondents who rated themselves as above-average drivers.

Carrying out the calculation, we get:

1269 * 0.74 = 939.06

Since the number of respondents can't be a fraction, we would round this number to 939, indicating that 939 respondents rated themselves as above-average drivers.