Math  /  Data & Statistics

Questionww-awu-alcks.com Sports Betting and Onlin. Sports Boting Secret - 11122/2411122 / 24 ATL @ CHI/// St... Home - Northern Essex wt{ }_{w t} Content A aleks - Jonathan Vogam. ChatGPT (5) Kaic Homework 4 4: 7(1,2,3,4)8(2,3,4)7(1,2,3,4) 8(2,3,4) Question 17 of 40 (1 point) I Question Attempt 1 of 3 Jonatha
Taxes: The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was $8040\$ 8040. Assume that the standard deviation is $4500\$ 4500. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law.
Part 1 of 5 (a) What is the probability that the sample mean tax is less than $7900\$ 7900 ? Round the answer to at least four decimal places.
The probability that the sample mean tax is less than $7900\$ 7900 is 0.1628 .
Part 2 of 5 (b) What is the probability that the sample mean tax is between $7400\$ 7400 and $8100\$ 8100 ? Round the answer to at least four decimal places.
The probability that the sample mean tax is between $7400\$ 7400 and $8100\$ 8100 is 0.6628 . Correct Answer:
The probability that the sample mean tax is between $7400\$ 7400 and $8100\$ 8100 is 0.6634 .
Part: 2/52 / 5
Part 3 of 5 (c) Find the 80th 80^{\text {th }} percentile of the sample mean. Round the answer to at least two decimal places.
The 80th 80^{\text {th }} percentile of the sample mean is $\$ \square Skip Part Check Save For Later Submit Assignment - 2024 MeGraw Hill LLC. All Rights Reserved. Terms of Use 1 Privagy Center I Accessibility

Studdy Solution
(a) 0.1635 (b) 0.6628 (c) $8159.69\$8159.69

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