Find the area under the curve the left of z= -1.2
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A: number of sample =n=15 From the other three part we know that mean =108 and variance =698
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A:
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A: Mean()=100standard deviation()=12
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A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: . P(0<z<1.86)
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A: It is needed to find the 95% confidence interval for the population average amount of heat produced…
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A: The mean is 28.25 and the standard deviation is 5.72.
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A: It is needed to find the critical value for the given conditions.
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