A regression was run to determine if there is a relationship between hours of study per week (x) and the final exam scores (y). The results of the regression were: y=ax+b a=5.391 D=24 -2=0.889249 r=0.943 Jse this to predict the final exam score of a student who studies 8 hours per week, and please round your answer to a whole number.

Q: 国 7.

A: Solve for a

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A: The given expression is 5+45669. Compute the value as follows.

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A: Given       5  2 3 − 4 4 8¯      1  5 7 5

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A: From the above scatter plot From First scatter plot  The value of correlation coefficient is  -0. 85…

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Q: Distance traveled (in kilometers per day) of ten sales person; 100, 112, 118, 120, 120, 121, 125,…

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Q: Kinda lost

A: here the graph passes two times  through the x -axis  so there will be two roots

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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.