The number of semester hours of college credit taken by CFA candidates has a distribution with a mean of 141 hours and a standard deviation of 18 hours. Consider a random sample of 100 first-time candidates for the CFA exam and let credit taken for the sample. 2. represent the mean number of hours of college a. what if μ? b. what is ơi? c. Describe the shape of the sampling distribution of x. d. Find the z-score for the value 142 hours. e. Find P(> 142)

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Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.