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In: Statistics and Probability

In a recent survey, 56​% of employed adults reported that basic mathematical skills were critical. A...

In a recent survey, 56​% of employed adults reported that basic mathematical skills were critical. A supervisor thinks this percentage has increased due to increased use of technology in the workplace. She takes a random sample of 470 employed adults and finds that 281 of them feel that basic mathematical skills are critical or very important to their job. Test her hypothesis at the α=0.05 level of significance.

What is the test statistics?

What is the critical value?

Estimate the left boundary of a 95% confidence interval of the population proportion.

also if there is any way someone can show me how to do this on a ti-84 calculator, I would appreciate it! Thank you!

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orchestra answered 2 years ago
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