In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism spectrum disorder. A sample of 900 children from Boston are tested, and 7 are diagnosed with autism spectrum disorder. Is the proportion of children affected with autism spectrum disorder higher in Boston as compared to the national estimate? Run the appropriate test at a 5% level of significance

Q: testing in this problem? mean proportion What is the level of significance? e the null and alternate…

A: Given:p_0=35%=0.35 As the population proportion is given, thus we are testing the single…

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: 61.3% of all Americanslike pepperoni on their pizza. Is this a parameter or statistic? Why?

A: Parameter is a numerical measurement that describing a characteristic of a population.

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: Past studies have indicated that the percentage of smokers is estimated to be about 33%. Given the…

A:

Q: Because of safety considerations, in May 2003, the Federal Aviation Administration (FAA) changed its…

A: Given information: x¯summer=183x¯winter=190nsummer=100=nwinterssummer=21swinter=24 a)…

Q: With your sample of 25 inmates, you want to test if the population mean age is different from 40 at…

A: To determine whether the test should be one-tailed or two-tailed, we need to consider the research…

Q: An article estimated that 80 percent of students at a large public university who are Facebook users…

A: According to the given information in this question, we need to identify the correct option

Q: You    want    to    test    whether    the    proportion    of    men    who    smoke    is…

A: Given that  Male  Female  Sample size (n1) = 200 Sample size (n2) = 200 Smoke (x1) = 62 Smoke…

Q: Newborn babies are more likely to be boys than girls. A random sample found 13,573 boys were born…

A: The claim of the test is there is sample evidence that the birth of boys is more common than the…

Q: In a study, scientists used high-performance liquid chromatography to determine the amount of drug…

A: Correct option: Option A

Q: Cybersecurity is a critical business issue that demands the attention of business and IT executives.…

A: Given The data is as follows: Sample proportion, p^=0.67

Q: An SMR over 100% ( i.e.,171 %) indicates that the "healthy worker effect" may be an issue in the…

A: Given::- An SMR over 100% (i.e., 171%) indicates that the "healthy worker effect" may be an issue in…

Q: A national health survey weighed a sample of 260 boys aged 6-11 and found that 45 of them were…

A: Hypothesis Testing

Q: In 2006 the GSS had a special topic that investigated disabilities. They asked respondents if they…

A: Favorable cases (x) = 265 and sample size (n) = 2749 Then,  We will find the point estimate of the…

Q: Some people are concerned that new tougher standards and high-stakes tests adopted in many states…

A: Given : x = 210 n = 1782 Hypothesis : H0 : p ≤ 0.103 Ha : p > 0.103 p^ = 2101782 p^ = 0.1178 sp^…

Q: In 2009, it was estimated that 63% of Americans supported the death penalty. In 2014, a Rasmussen…

A: sample size(n)=943 No. of Americans supported the death penalty(x)=536 population proportion=0.63

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given, n=119, x=31, α=0.05 Then, p^=31119=0.260504

Q: Most universities and colleges require an SAT score as one of the inputs to an admissions decision.…

A: It is given that the SAT scores for 10 students and their college GPAs.

Q: The Bureau of Alcohol, Tobacco, and Firearms (BATF) has been concerned about lead levels in…

A: Given, Range = 49 to 720 Margin of Error E = 10 at 90% confidence level  α = 0.1Critical value Zα2 =…

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given : Mean = μ = 0.36  Level of significance = 0.05 p^ = xn    = 31118    = 0.2627

Q: Suppose that a test for presence of a disease is 87.5% accurate. Within a sample of 3200 patients,…

A: (1)   From the given information,   The incidence rate of disease = 14% The accuracy of test =…

Q: ssume that the national divorce rate is 30% (meaning that 30% of marriages end in divorce).  In…

A: Given problem is : Assume that the national divorce rate is 30% (meaning that 30% of marriages…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 34%. Given the…

A: Given,Past studies have indicated that the percentage of smokers was estimated to be about 34%. That…

Q: The Vegetarian Resource Group commissioned Harris Poll in 2016 to conduct a nationally…

A:

Q: Thirty-three percent of all Americans drink bottled water more than once a week (Natural resources…

A: Note: Hi there! Thank you for posting the question. Unfortunately in the sub-part(b), some required…

Q: In a 2015 study entitled How Undergraduate Students Use Credit Cards, it was reported that…

A: Here we have to identify What type of t-test should be used here

Q: reasons, calf dehorning has become a routine practice at dairy farms. A report by a continental…

A: Answer The sample size [n] =635The favorable cases [x] = 513The population proportion [p] = 0.80

Q: A marketing manager for a cell phone company claims that more than 35% of children aged 10-11 have…

A: Assume that p is the true proportion of all children aged 10-11 that have cell phones.

Q: A research article stated that there was a mean difference in depressive symptoms between male and…

A: From the provided information, The claim is that there was a mean difference in depressive symptoms…

Q: The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest…

A: Define:Sample 1: The SAT math test scores for students whose parents are college graduates with a…

Q: In a study of brand recognition, 821 of the 849 subjects recognized the Campbell’s soup brand. Use…

A:

Q: in october 1947 the gallup organization surveyed 1000 adult americans and asked are you a total…

A: We have given thatn1 = 1000 , x1 = 378n2 = 1000 , x2 = 333Significance level (α) = 0.05Now,p̂1 =…

Q: A software company is interested in improving customer satisfaction rate from the 80% currently…

A: Given that  Sample size n =243 Favorable cases x =205 Sample proportion p^=x/n  =205/243 =0.8436…

Q: You have been hired by a consortium of local car dealers to conduct a survey about the purchases of…

A: Given: Confidence level = 95% Margin of error = 0.03 Formula Used: n = ZαMargin of error2 p(1-p)

Q: Which statistical method would be most effective to determine if the average size of dogs in Europe…

A: Find statistical method would be most effective to determine if the average size of dogs in Europe…

Q: Is the proportion of twin births among teenage mothers different from the overall figure?

A: It is given that Sample size n = 469 Number of twin births, X = 7 Level of significance = 10% = 0.10

Q: TechBuzz is an IT company that monitors the status of large data warehouses. According to TechBuzz,…

A: In a sample of 190 servers, 142 servers are over-utilized. Therefore, the sample proportion of…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.