The life in hours of a battery is known to be approximately normally distributed, with standard deviation o = 1.25 hours. A rand ample of 10 batteries has a mean life of x = 40.5 hours. a) Is there evidence to support the claim that battery life exceeds 40 hours? Use a = 0.050. The battery life significantly different greater than 40 hours at a = 0.050. b) What is the P-value for the test in part (a)? -value = i Round your answer to three decimal places (e.g. 98.765). c) What is the 6-error for the test in part (a) if the true mean life is 42 hours?

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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.