A local school district that the number of school days missed by its teachers is below the national average of 휇=5. A random sample of 28 teachers had a mean of 3.3 days missed by its teachers with a standard deviation of 1.96 days. At 훼=0.05,is there enough evidence to support the district’s claim. You can use either the rejection region or p-value method.

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.

Given: △abc, bc> ac, d∈ ac , cd=cb prove: m∠abd is acute