Jamia says that because sine is an odd function, sin (theta / 2) is always negative if theta is negative. that is, she says that for
negative values of, sin (theta / 2 = −(1 − cos(theta) / 2 . is she correct? explain how you know.

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant

The weather forecaster says that there is a 51% chance of rain today. which statement describes the likelihood that it will rain today?