Suppose that an IRS examiner correctly detects and flags 90% of all erroneous returns that he reviews. In addition, he mistakenly flags 2% of correct returns that he reviews. Suppose that about 20% of the tax returns he reviews contain errors. (a) What proportion of tax returns he reviews are flagged? (b) What proportion of tax returns he flagged actually contain errors?

Q: Suppose that males between the ages of 40 and 49 eat on average 102.4 g of fat every day with a…

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

Q: Exercise 1: You own two surfboards, a blue one and a purple one. You surf everyday and the…

A: In this case, the events of interest are "using the blue surfboard" (i.e., defined as success) and…

Q: Use the normal distribution below for the prices of a high end HD television to answer the question.…

A: as we know empirical rule:  approximately 68 -95 -99.7% data fall within 1σ-2σ-3σ of μ.

Q: Question 4 of 4, Step 3 of 4 An insurance company wants to know if the color of an automobile has a…

A:

Q: Explain to me the following two tables in detail and what is the difference between them

A: Given information: The output for regression model is given.

Q: ICA 7-A Spooled t test 4 individuals were tested in the Memory test in the congruent condition &…

A: Given Information: 4 individuals were tested in the Memory test in the congruent condition. Another…

Q: The categories, ratings, and weights for a particular employee are shown in this table. Rating…

A:

Q: Determine the range of the following data:   13,32,31,21,24,36,43,67,64,58,62,63,72,83,52,69,81,77

A: Given data(x): 13,32,31,21,24,36,43,67,64,58,62,63,72,83,52,69,81,77

Q: A high school baseball player has a 0.22 batting average. In one game, he gets 8 at bats. What is…

A: Givenp=0.22sample size(n)=8Let "x" be no.of hits he get in the…

Q: What is the dependent independent variable in an Knee jerk reflex test ?

A: Reflex means (to prevent overstretching of muscles) It compensates with concentration  Dependent…

Q: Jane wants to estimate the proportion of 13 students on her campus 4 who eat cauliflower. After…

A:

Q: The probability that a high school student has smoked marijuana is 46%. If 16 high school  students…

A: Given that  p=46%=0.46 n=16

Q: The Scottsdale fire department aims to respond to fire calls in 5 minutes or less, on average.…

A: Given: μ = 5 minutes = 300 seconds σ = 1 minute 36 seconds = 96 seconds n = 18 X = 5 minutes 15…

Q: The television show Found has been successful for many years. That show recently had a share of 29,…

A: Solution: Here sample size=n=12 Probability of success=p=0.29 Here x ~BINOMIAL (n=12, p=0.29 )…

Q: You pick up your iPhone to send your best friend a text and the iPhone is not working; the screen is…

A: Here, hypothesis testing process. Theory, experiment....... Conclusion. We will arrange in order.

Q: Child A is 50.4 inches tall. The population of children of the same age and gender have a mean…

A: given data child A :x1 = 50.4μ1 = 55.2σ1 = 2.67child B:x2 = 50.1μ2 = 53.3σ2 = 2.64

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A:

Q: Suppose that 70% of all voters prefer Candidate A. If 10 people are chosen at random for a poll,…

A: given data P(favor candidate A) = p = 0.70sample size = 10 x = no. of people favor candidate A.…

Q: 5.28 A manufacturer knows that on average 20% of the electric toasters produced require repairs…

A:

Q: In a random sample of 250 younger bank clients, 140 used online banking, and in a random sample of…

A: It is given that  Younger bank clients: X1 = 140 n1 = 250 Older bank clients: X2 = 126 n2 = 300

Q: A traditional test for extrasensory perception (ESP) involves a set of playing cards, each of which…

A:

Q: A pharmaceutical company makes tranquilizers. We wish to find the 89% confidence interval. It is…

A: Data given…

Q: Imagine you are doing a Related-Samples t-test, and you are on Step Three of the hypothesis test.…

A: Data given sample of difference scores that you calculated is -2, -4, -3, +1

Q: The mean incubation time of fertilized eggs is 19 days. Suppose the incubation times are…

A: b)According to given question,    We have:-    X~N(19,1) μ=19 σ= 1 area between two times (or raw…

Q: About 2% of the population has a particular genetic mutation. 900 people are randomly selected. Find…

A: From the provided information, About 2% of the population has a particular genetic mutation that is…

Q: Find the area under the standard normal distribution curve to the left of  =z−1.68

A: It is needed to find the area under the standard normal distribution curve to the left of z = −1.68.

Q: A pharmaceutical company conducts a study where 50 patients are given a drug. They find that 10…

A: Sample is the subset of the population.

Q: The following data represent the living situation of newlyweds in a large metropolitan area and…

A: <$20,000   $20−35,000   $35−50,000   $50−75,000   >$75,000  total Own home 31…

Q: Suppose that 2% of the employed lose their job each month. Further suppose that 25% of the…

A: 2% employed lose their job each month : 25% unemployed are getting job each month. s= 2% = 0.02 f =…

Q: Total Answer 177 146 323 Copy Data Step 2 of 4: Calculate the expected value for the number of…

A: Given that  Total lawyer = 80 Total Republican = 146 Total = 323

Q: ind the probability using the normal distribution:  P (z>2.33

A: standard normal distribution Z~N(0,1) P(z>2.33) = ?

Q: Question 15 Consider a Geometric Distribution G(0.0453) What is the standard deviation for the…

A: Given X~Geom(0.0453)

Q: If your score on your next statistics test is converted to a z score, which of these z scores would…

A:

Q: Scores on a statistics final in a large class were normally distributed with a mean of 75 and a…

A: given data normal distributionμ = 75σ = 7.5

Q: A survey asks questions about​ one's happiness and health. One would think that health plays a role…

A: Given that:   Poor Fair Good Excellent Not too happy 685 1366 1629 732 Pretty happy 940 3817…

Q: Borrowing Library Books For Americans using library services, the American Library Association (ALA)…

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(-…

A: The question is about std. normal distribution Given : z ~N ( 0, 1 ) P ( -b < z < b ) = 0.9008…

Q: Pele took all samples of size n=40 from a population of test scores. He found that on average, the…

A: Introduction: It is required to find the standard error and expected value of the dataset.

Q: A test has two portions: verbal and math. The scores for each portion are positively correlated with…

A: From the given information, A test has two portions: verbal and math Correlation between verbal and…

Q: Suppose the age that children learn to walk is normally distributed with mean 11 months and standard…

A: GivenMean(μ)=11standard deviation(σ)=2.1sample size(n)=33

Q: Another company's sales increase by the same percent each year. This growth is...

A: Given The sale of the company increases by the same % each year.

Q: Given that p(B│A) =.54, p(A│B) =.35, and p(B) =.48, find p(A).

A: Answer: - Given that p(B│A) =.54, p(A│B) =.35, and p(B) =.48.                Find p(A).

Q: -8 -6 -0-2- -0-1- 0.4 -0:3-

A: From the given graph, we have  Mean, μ = -6 Standard deviation, σ = 1

Q: How can the empirical rule be restated in terms of z-scores and percentiles? Restate it for four out…

A:

Q: A store's sales (in thousands of dollars) grows according to the linear model y=25+10x, where x…

A: The question is about linear model Given : The eq. of linear model : y = 25 + 10 x Where, y :…

Q: Find the​ least-squares regression line treating weight as the explanatory variable and miles per…

A: The least-squares regression line treating weight as the explanatory variable and miles per gallon…

Q: A particular fruit's weights are normally distributed, with a mean of 3/1 grams and a standard…

A: given data normal distribution μ=371σ=11P(386<x<397)=?

Q: The lengths, in inches, of adult corn snakes have an unknown distribution with a population mean of…

A: Given that  Sample size n =70 population mean of 62 inches and a population standard deviation of 9…

Q: Type I error: Washers used in a certain application are supposed to have a thickness of 2…

A: Given: null hypothesis H0: μ = 2 this means that the thickness of the mean washers is 2 millimeters.…

Q: Which of these experiments sounds the most like it would be analyzed with a Related-Samples t-test?…

A: In this case, we need to identify the experiment which would be analyzed with a Related-Samples…