The Internal Revenue Service reports that the mean federal income tax paid in a recent year was $8040 with a standard deviation of $5000. The IRS takes a random sample of 100 tax returns and computes the sample mean federal income tax paid. What the probability this sample mean of 100 tax returns is less than $7500

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Q: What is the standard deviation of this probability distribution

A:

Q: What is the probability that the workers received a salary higher than or equal to ₱575 per day?

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Q: Suppose average study hours of students passing Statistics Lecture was 75 hours and standard…

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A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: The American Automobile Association (AAA) reported that families planning to travel over the labor…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…

A: given that mean(μ)= 80.5 standard deviation (σ) = 9.9

Q: An electrical company claims that the average life of the bulbs it manufactures is 1200 hours with…

A:

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Q: According to the Department of Education, the time college students spend on their cell phones daily…

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A: We find the mean and standard deviation using the step by step procedure in Ti-84 calculator as…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.