Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 100 minutes and a standard deviation of 10 minutes. Whatproportion of 1040R tax forms will be completed in at most 104 minutes? Round your answer to at least four decimal places.0XG

Answered: Suppose that the time required to…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A recent Nielsen analysis found that the typical U.S. smartphone user is spending an average of 220 minutes per day using apps. We speculate that the average time spent using apps for Generation X smartphone users (aged 41-56 years) is less than the national average. The hypotheses are Ho: H = 220 minutes versus Ha: µ < 220 minutes. Summary results from R are provided. Summary Statistics Std. Dev (s) Mean Sample Size (n) 205 minutes 63.25 minutes 31
One year consumers spent an average of $22 on a meal at a resturant. Assume that the amount spent on a resturant meal is normally distributed and that the standard deviation is $3. Complete parts (a) through (c) below. Between what two values will the middle 95% of the amounts of cash spent fall?
Suppose that the speeds of cars travelling on California freeways are normally distributed with a mean of 63 0 miles hour miles tickets for cars with speeds exceeding 80 . The records show that exactly 5% of the speeds exceed this limit. Find the standard deviation of the speeds of cars travelling on California freeways. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place. hour miles hour The highway patrol's policy is to issue
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suppose that peices of a gallon of mill at various stores in one town have amean of $3.75 with a stabdard deviation of $0.09 use chebyshev theourm what is the minimum percentage of stires that sell a gallon of milk for between $3.57 and $3.93 round your answer tk ine decimal place
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Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 3/2 Click to view page 1 of the table, Click to view page 2 of the table. pr 0.55 =/2 pr /2 or The indicated IQ score, x, is (Round to one decimal place as needed.) /2 /2 or 2 or on 2 on ? Enter your answer in the answer box.
The IRS claims it takes an average of 3.7 hours to complete a 1040 tax form. Assume the time t the form is normally distributed with a standard deviation of 15 minutes or 0.25 hours. complete Use the Cumulative Z-Score Table to answer the following questions. Write your answer as a percent using 2 decimal places. What percent of people would you expect to complete the form in less than 3.45 hours? What percent of people would you expect to complete the form-in more than 3.45 hours? What percent of people would you expect to complete the form in less than 3.4 hours? What percent of people would you expect to complete the form in more than 3.4 hours? What percent of people would you expect to complete the form between 3.4 and 3.45 hours?
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Suppose that the time required to complete a 1040R tax form is normal distributed with a mean of 100 minutes and a standard deviation of 10 minutes. What proportion of 1040R tax forms will be completed in at most 104 minutes? Round your answer to at least four decimal places. X G