Probability one of three audited had charitable deduction

Assignment Help Basic Statistics
Reference no: EM13140426

Suppose the Internal Revenue Service is studying the category of charitable contributions. A sample of 18 returns is selected from young couples between the ages of 20 and 35 who had an adjusted gross income of more than $100,000. Of these 18 returns 4 had charitable contributions of more than $1,000. Suppose 3 of these returns are selected for a comprehensive audit.

What is the probability exactly one of the three audited had a charitable deduction of more than $1,000?

What is the probability at least one of the audited returns had a charitable contribution of more than $1,000?

Reference no: EM13140426

Questions Cloud

Calculate your percent yield of aspirin : You are given 2.56 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.89 of aspirin. Calculate your percent yield of aspirin
Paradigm of healing hospital : Explain the paradigm of the Healing Hospital. Consider the ramifications and challenges of this paradigm, given the many spiritual perspectives of caregivers and patients.
Calculate k : Consider the equation A(aq) + 2B(aq) 3C(aq) + 2D(aq). In one experiment, 45.0 mL of 0.050 M A is mixed with 25.0 mL 0.100 M B. At equilibrium the concentration of C is 0.0410 M. Calculate K.
Equal annual investments : Instead of investing the entire $1,000,000, Lee invests $300,000 today and plans to make 9 equal annual investments into the fund beginning one year from today. What amount should the payments be if Lee plans to establish the $1,898,000 foundation..
Probability one of three audited had charitable deduction : What is the probability exactly one of the three audited had a charitable deduction of more than $1,000? What is the probability at least one of the audited returns had a charitable contribution of more than $1,000?
What is the work in joules done : what is the work in joules done on the system to compress He gas from 24.0 L to 12.5 L against a pressure of 1.5 atm at a constant temperature of 37.4 C?
Understanding of the power of prayer : Write a detailed discussion on your understanding of the power of prayer or lack thereof in the healing process. Give your rationale for your perspective, making it as strong as possible to persuade others
Calculate the molar enthalpy change : Calculate the molar enthalpy change when mercury is cooled 10 K. The molar heat capacity of mercury is 27.8 J/K*mol
Perform a regression analysis on the data : Observations are taken on net revenue from sales of Hughes, HNS, and satellite services to see if offering rebates is beneficial for the organization.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Identifying a significant positive correlation

A researcher conducts some research in which they identify a significant positive correlation (r =0.42) between the number of children a person has and their life satisfaction. Which of the following is it inappropriate to conclude from this resea..

  Create histograms for both frequencies

Evaluate your histograms for any outliers in your data. Based on your evaluation of outliers, you may trim no more than 1% of the data contained in the data set. This must be done symmetrically (i.e., trimming no more than 0.5% off the top and 0.5..

  T-test with unequal variances

Mauricio Cruz, a wine merchant for Cruz's Spirits Emporium, wants to determine if the average price of imported wine is less than the average price of domestic wine. The data obtained is shown in the table below.

  Determine a confidence interval for mean efficiency

Determine a 95% confidence interval for the mean efficiency of a given batch of motors. If we want to cut the confidence interval by 1/3, how many motors should be tested?

  Description of five step hypothesis test

Here are heart rates for a sample of 30 students before and after a class break. At alpha =.05, was there a significant diffeence in the mean heart rate?

  Find number of burglaries committed in the neighborhood

The following two variables: x = the number of police patrol cars cruising in a given neighborhood, and y = the number of burglaries committed in the neighborhood?

  Find z score on comparison distribution for sample score

The Z score on the comparison distribution for the sample score, and (c) your conclusion. Assume that all populations are normally distributed.

  Reducing the average time it takes to complete deliveries

At the 0.05 level of significance, test whether the software package has reduced the average time it takes to complete deliveries.

  Question on probability for normal distribution

Find the probability that a standard normal random variable will assume a value between: Find a z such that 70% of the area is above that value.

  Pearsons correlation coefficient

Does the weight of a vehicle affect the gas mileage? The following random sample was collected where  x  = weight of a vehicle in hundreds of pounds and  y  = miles per gallon.

  Relative frequency-cumulative frequency distribution

The frequency distribution below was constructed from data collected from a group of 25 students. Construct a relative frequency distribution.

  Probability mass function-poisson

An article in Annals of Mathematical Statistics reports the following data on the number of borers in each of 120 groups of borers. Does the Poisson pmf provide a plausible model for the distribution of the number of borers in a group?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd