The marks of a candidate in statistics examination are normally distributed with a mean of 55 and a standard deviation of 8. Find the probability that a candidate chosen at random get marks. (a) more than 70 marks. (b) between 60 and 70.

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A: Given Data Population Mean,μ = 300.0 Population Standard Deviation,σ = 8.0

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: It is given that  Mean, μ = 200 Standard deviation, σ = 9 Z-Score, Z = ( X - μ )/σ

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Q: find standard deviation if range is 3.

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Q: The time it takes for a statistics professor to mark a single midterm test is normally distributed…

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