In a poll, 303 of 1010 randomly selected adults aged 18 or older stated that the

Question

In a poll, 303 of 1010 randomly selected adults aged 18 or older stated that they believe there is too little spending on national defense. Use this information to complete parts (a) through (e) below (a) Obtain a point estimate for the proportion of adults aged 18 or older who feel there is too little spending on national defense. p = .3 (Simplify your answer.) (b) Verify that the requirements for constructing a confidence interval about p are satisfied. Are the requirements for constructing a confidence interval about p satisfied? A. Yes, the requirements for constructing a confidence interval are satisfied. B. No, the requirement that the sample be a simple random sample is not satisfied. C. No, the requirement that the sample size is no more than 5% of the population is not satisfied. D. No, the requirement that np (1 - p) is greater than 10 is not satisfied.

Explanation / Answer

p = 0.3

np = 0.3 * 1010 = 303

n(1-p) = 1010*0.7 = 707

Since both are greater than 5, the requirements are satisfied.

Option-A)

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