In a Certain State, the Daily Amounts of Industrial Waste

question 4

Multiple Choice

In a certain state, the daily amounts of industrial waste are normally distributed, with a mean of 9,000 tons and a standard deviation of 1,000 tons. Find the probability that on a randomly selected day the amount of industrial waste is less than 7,000 tons. Use a table of the standard normal distribution to solve the problem. Round your answer to four decimal places. ​

• A)0.9772
• B)0.1836
• C)0.7936
• D)0.0228
• E)0.7720

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