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In a poll, 412 of 1030 randomly selected adults aged 18 or older stated that they...

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Basic Math

In a poll, 412 of 1030 randomly selected adults aged 18 or olderstated that they believe there is too little spending on nationaldefense. Use this information to complete parts (a) through (d)below.

(A) Obtain a point estimate for the proportion of adults aged 18or older who feel there is too little spending on nationaldefense.

(B) Are the requirements for construction a confidence intervalabout p satisfied?

-a) Yes, the requirements are satisfied.

-b) No, the requirements of the sample being a random sample arenot satisfied.

-c) No, the requirement that np(1-p) is greater than 10 is notsatisfied.

-d) No, the requirement that the sample size is no more than 5%of the population is not satisfied.

C) Construct a 90% confidence interval for the proportion ofadults aged 18 or older who believe there is too little spending onnational defense.

The 90% confidence interval is ( ___ , ___ )

D) Is it possible that more than 45% of adults aged 18 or olderbelieve there is too little spending on national defense? Is itlikely?

-a) It is possible, but not likely.

-b) It is not possible.

-c) It is possible and likely.

Answer & Explanation Solved by verified expert
4.1 Ratings (582 Votes)
Apoint estimate for the proportion x 4121030 04Point estimate is 04BAre the requirements for construction a confidence    See Answer
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