1. A radar unit is used to measure the speed of automobiles on the expressway during the rush-hour traffic. The observer measures 76 cars and obtains the mean speed of 62.0 mph. For reference, compare this problem with Problem 1 of EX 07. (a) Assuming the standard deviation is about 4.95 mph, find the 95% confidence interval of the mean speed of the cars. (b) Find the 95% upper confidence bound, using the standard deviation of Part (a). (c) If the 90% upper confidence bound is 63.5 mph, what is the standard deviation? (d) Find the 98% confidence interval, using the standard deviation of Part (c). (e) Find the 99% lower confidence bound, using the standard deviation of Part (c).

Q: can you explain the first few questions aswell

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Q: question 5

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Q: Question 4 too please.

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Q: Can you just do question c

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Q: Is this for question 2 or 3?

A: The standard deviation is 0.2.

Q: What is supposed to be in place of the question mark in Step 2?

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Q: Can you please evaluate part IV and V? Can part b and c also be completed?

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Q: what about questions 4-15?

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Q: do question 7

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Q: I said question number 3. Any chance you can do 3?

A: Given :

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Q: can you do part 2 of the question and part 3

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Q: question number 2

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.