According to a​ report, 65.3​%of murders are committed with a firearm. ​(a) If 100 murders are randomly​ selected, how many would we expect to be committed with a​ firearm? ​(b) Would it be unusual to observe 82 murders by firearm in a random sample of 100 murders? Why? ​(a) We would expect _____ to be committed with a firearm.

Q: 2. A company claims that 90% of its deliveries arrive on time. You take a sample of 74 deliveries,…

A:

Q: Suppose that the unemployment rate for 18- to 34-year-olds was reported to be 10.6%. Assume that…

A: Given, The unemployment rate for 18- to 34-year-olds was reported to be 10.6% based on a random…

Q: 3) At the last census, 20% of the people in a town were less than 16 years old, 20% were 16-30, 25%…

A: The following data is given: Age Observed frequency < 16 30 16 - 30  31 31 - 45 37 46…

Q: An article in the newspaper claims that 60% of registered drivers have the organ donor designation…

A: This question is based on hypothesis testing. Specifically, this question was asked to verify the…

Q: 2. The principal of the school claims that the main age of tne teachers is 48 years. The mean age of…

A:

Q: In a random survey of 1,000 households in the United States, it is found that 29 percent of the…

A:

Q: able to easily calculate the actual percent of dropped calls directly from the entire database of…

A: Given data   sample size, n =2500 population proportion,p= 0.01 Significance level, α=…

Q: in a simple random sample of 25 companies, 23 have both twitter and facebook accounts. can we…

A:

Q: In 2000, 58% of females aged 15 and older lived alone, according to the U.S. Census      Bureau. A…

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Q: If all possible random samples of size =45 are selected from a population with μ=69 and a σ=6, and…

A:

Q: The results are shown in Table 1. Help the employer to decide whether the days for highest number of…

A:

Q: .In sampling a large number of electronic chips manufactured by a machine, the mean number of…

A: First we have to find the probability of atleast 3

Q: According to the Government Accountability Office, 80% of all college students ages 18 to 23 nad…

A:

Q: n New York City, a study was conducted to evaluate whether any information that is available at the…

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Q: Suppose that in a large class, the instructor announces that the average grade on an exam is 75.…

A: According to the definition of estimation, a sample mean is equal to the population mean.

Q: You read an online article that claims that 62% of 8-year-olds have social media accounts.  You want…

A: Solution: From the given information, the probability of 8-year-olds have social media accounts is…

Q: An ambulance service claims that at least 65% of the calls received involve life-threatening…

A: Given information- Population proportion, p = 0.65 Sample size, n = 150 Significance level, α = 0.05…

Q: In the year 2000, the state of Indiana began a $40-million renovation of its state fairgrounds,…

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A: Population

Q: AutoTrader.com would like to test if a difference exists in the age of three different types of…

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A:

Q: For a sample of 9 with a mean of 5994. How would i find the EX?

A:

Q: An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans…

A: p^=xn= 2255= 0.40

Q: (a) Construct and interpret a 95% large-sample confidence interval for the difference in the…

A:

Q: There are three possible alternative hypotheses in a hypothesis test for a population mean. Identify…

A: There are three possible alternative hypotheses. Let µ be the population mean and c be the value to…

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A:

Q: An employer wants to know which days of the week employees are absent due to medical leave (MC) in a…

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Q: According to a 2015 article, 37% of Americans aged 25 years or older have been arrested. An Orange…

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Q: A doctor believes that 80% of all patients having a particular disease will be fully recovered…

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Q: 5. A certain calculator circuit board is manufactured in lots of 200. If 1% of the the  boards are…

A: Since the probability is fixed, we will apply binomial distribution here.

Q: 1. A policeman believes that less than 40% of older drivers speed on highways, but a confidential…

A: The hypotheses can be constructed as: H0: p1 = 0.40 H1: p1 ≠ 0.40 Given: Sample size (n) = 88 Out of…

Q: A random sample is one on which the

A:

Q: A sample of n = 64 scores is selected from a population with µ = 80 and with σ = 24. On average, how…

A: Givenn=64μ=80σ=24

Q: An investigator analyzed the leading digits from 791 checks issued by seven suspect companies. The…

A: Chi-square test for goodness of fit

Q: A state highway patrol official wishes to estimate the number of  legally intoxicated    drivers on…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.99.

Q: Previously, an organization reported that teenagers spend 8.5 hours per week, on average, on the…

A: Given information: The data represents the number of hours per week teenagers spend on the phone.

Q: 3. In a study of the relatic a sample of 180 college of comparable age and Estimate the difference…

A: Estimation is an important concept in statistics.

Q: 4. The fuel economy sticker on a new SUV's window sticker indicates the owner can expect 16 mpg in…

A: From the given information, Sample size n =50 Using Excel function, “=AVERAGE(A1:A50)”, the Sample…

Q: A pharmacist claims that more than 60% of all customers simply collect a prescription. One of her…

A: Hypotheses: Here p be the proportion of customers simply collect a prescription. The aim is to check…

Q: 4. Do smokers have higher blood pressure? A random sample of twenty-eight smokers was obtained and…

A: Solution: 4. Let µ1 be the mean blood pressure of smokers and µ1 be the mean blood pressure of…

Q: According to YCharts in 2018, the unemployment rate for 15- to 24-year-olds in British Columbia was…

A: Sample size = 400 Proportion of sample having unemployment of 15-24 years = 0.094  Proportion of…

Q: A random sample of 38 jelly beans is provided. 23% are blue, 23% are orange, 15% are green, 15% are…

A: A random sample of 38 jelly beans is provided. 23% are blue, 23% are orange, 15% are green, 15% are…

Q: 5. At a certain college, it is estimated that at most 35% of the students ride bicycles to class. At…

A: Given information: It is found that 28 students out of 90 in a certain college ride bicycles to the…

Q: 1. A lawn mower company will produce 1,500 lawn mowers by 2020. In an effort to determine how much…

A: Given: The size of the population is N=1500. The size of the sample is n=187. The sample is x¯=5.3.…

Q: You read an online article that claims that 62% of 8-year-olds have social media accounts. You want…

A: Here n = 130 and p = 62% = 0.62

Q: 20% of Australian adults suffer from allergies. Given a random sample of ten adults, what is O ()"

A: We have to find given probability.

Q: 4. In a study to estimate the proportion of residents in a certain city and its suburbs who favor…

A:

Q: In a recent year, a fact sheet for the state of Pennsylvania stated that 72.6% of all public high…

A: Given: Population proportion p=0.726 Sample size n=400   a) Mean Mp^=0.726   b) Standard deviation…

Angles

In mathematics, angles constitute a very important part. Just like the concept of lines, an angle is a necessary figure that is used for measurement. How do you define its formation? It is formed when two or more lines meet at a point. The point at which two or more lines meet is known as the vertex. When the lines get inclined at this point, they do form various angles. Angles are measured from the vertex in terms of degrees.