d. a simple random sample of 40 auto insurance policies, find the probability that the average cost is more than $1078. e. For part d), is the assumption of normal necessary? O YesO No

A: We have to find the integration of given function: ∫cos2 x dx We know the trigonometric identity,…

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A: Since part a-c is already solve and correct in my knowledge therefore i am solving part (d) and (e)

A: Substitute u for x+4. For  x=-3 u=-3+4u=1 For x=2 u=2+4u=6 Now the integral become:…

A: Calculation:Given: V =  3t2 +4t+13.Obtain the first derivative of v as follows.

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A: We will use u.v rule of integration.

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