A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a SRS of n = 1100 registered voters and found that 570 would vote for the Republican candidate. Let ( p ) represent the proportion of registered voters in the state who would vote for the Republican candidate. We test H0 : p = .50       HA : p > .50  (a) What is the -statistic for this test?   (b) What is the P-value of the test?

Q: Dr. Mackintosh believes a new olfactory therapy would be more successful in promoting weight loss…

A: We have to answer questions based on hypothesis testing.

Q: A random sample of 250 physicians shows that there are 40 of them who make at least $400,000 a year.…

A: We have to find value of test statistics.

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A:

Q: The sales rep of a waterbed claims that 25% of the Filipino died because of cardiovascular diseases.…

A:

Q: 17% of all college students volunteer their time. Is the percentage of college students who are…

A: 17% of all college students volunteer their time. Is the percentage of college students who are…

Q: Paraquat is one of the most widely used herbicides and is highly toxic to In a study to assess the…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A researcher claims that the incidence of a certain type of cancer is less than 5%. To test his…

A: In this context, a researcher claimed that the proportion of incidence of particular type of cancer…

Q: A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus…

A:

Q: sleep researcher hypothesizes that people who are allowed to sleep for only four hours will score…

A:

Q: he Genetics and IVF Institute conducted a clinical trial of the XSORT method designed to increase…

A: Given Information: Sample size (n) = 325  Proportion of having girl baby (p) = 295/325 = 0.9077

Q: A company that produces cranberries knows that about 7% of its cranberries are bruised in the…

A: It is given that the p-value is 0.004.

Q: A newspaper article indicated that 43 percent of cars with black seats are white, 46 percent of cars…

A: Given: Total categories =k=4 Degrees of Freedom= k-1 =3 chi-square test statistic = 8.2

Q: 58% of students entering four-year colleges receive a degree within six years. Is this percent…

A: P-value in the context of the study: If the population proportion of students who played…

Q: In a study examining the relationship between coffee consumption and heart disease, the researcher…

A: Correlation: It measures the strength of the relation between the variables. The sign of the…

Q: In a  lab ,the coronavirus  vaccine causes negative effects  in 3 out of every 100 patients . 5…

A: Given,n=5p=0.03X~Binomial(n=5,p=0.03)P(X=x)=cxn px(1-p)n-x ;X=0,1,.....n

Q: A computer manufacturer believes that the proportion of hardware malfunctions is different in humid…

A: Given, The manufacturer takes a random sample of 400 machines sold in Florida (humid) and 400…

Q: A principal of high school was concerned with amount of time her students devote to working at…

A: Given data n=25 x=12.5 s=3.9 μ=10.7

Q: A computer manufacturer believes that the proportion of hardware malfunctions is different in humid…

A: Given Information: Claim: proportion of hardware malfunctions is different in humid climates than in…

Q: You are performing a two-tailed t-test with a sample size of 19 If a = 0.02, and your test statistic…

A:

Q: A manufacturer of baby powder claims that 20 out of 56 mothers prefer brand A of baby powder. A…

A: X=20, N=56x=8, n=25α=0.01

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: From the provided information,

Q: The Centers of Disease Control and Prevention has launched studies of drug-resistant gonorrhea. Of…

A:

Q: In a university, a poll was conducted and the results were that 220 out of 275 professors and 186…

A: The following information has been provided: X1=220            X2=186n1=275             n2=226 The…

Q: Do the data provide sufficient evidence that the production of mobile phone users who prefer the…

A: Given that Sample size n = 151 Number of mobile phone users who prefer the producer's brand, X = 28…

Q: The mayor of a town has proposed a plan for the construction of an adjoining bridge. A political…

A: Given :  n = 900 p^ = 0.48  p = 0.51

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

A:

Q: A recent study at a local college daimed that the proportion, p, of students who commute more than…

A: Given that, x=55,n=265 The sample proportion is,

Q: Researchers examined the relationship between social playtime and emotional intelligence in a sample…

A: From the provided information, The hypotheses can be constructed as: H0: ρ = 0 (There is no…

Q: To determine if there is a significant difference in the proportion of smokers among the blue collar…

A:

Q: A market research study conducted by a local winery on white wine preference found the following…

A: Let p1 denote the proportion of women who prefer white wine, p2 denote the proportion of men who…

Q: A shopkeeper wonders if number of their female and male customers are equal or not. They count the…

A:

Q: In a sample of 88 children selected from a city, 8 children suffer from asthma. What is the P-value…

A: Statistical hypothesis testing is an important method in inferential statistics. Statistical tests…

Q: Critical Values=

A: Obtain the critical value in case of right tailed hypothesis testHere, it is given that the…

Q: A vaccine to prevent a severe virus was given to children within the first year of life as part of a…

A: There are two independent samples which are vaccine and placebo. We have to test whether the vaccine…

Q: 5. The quality control officer of a company that manufactures keyboards wants to determine the…

A:

Q: What is the F test formula for comparing three or more means?

A: Formula :

Q: Is the proportion of wildfires caused by humans in the south different from the proportion of…

A: Given Information: 394 of the 533 randomly selected wildfires looked at in the south were caused by…

Q: In a survey of families in which both parents work, one of the questions asked was, "Have you…

A: Given that n1=n2=200 P1= number of percent of men who said yes P2= number of percent of women who…

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A:

Q: A clinical trial is conducted to compare a new pain re- liever for arthritis to a placebo.…

A:

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: Two popular drugs used for the treatment of depression are Resithan and Exemor.  x1 = 187, n1 = 510…

Q: Market research has shown that 60% of persons who are introduced to a certain product actually buy…

A: A random variable X, said to follow binomial distribution if the probability mass function of X is,…

Q: A team of engineers at the research center of a car manufacturer performs crash tests to determine…

A: Solution:- from given information Null hypothesis H0:p=0.08Alternate hypothesis…

Q: 17) In an experiment, 16% of 734 subjects treated with viagra experienced headaches. In the same…

A: The null and alternative hypotheses are stated below:

Q: sample of 100 high income voters and 40 out of a sample of 75 low income voters supported a decrease…

A: Given : x1= 60.0 n1= 100 x2= 40.0 n2= 75 significance level, 0.05

Q: 6)A poll surveyed 341 video gamers, and 81 of them said that they prefer playing games on a console,…

A: From given data we have ; n=341 Sample x=81  Population  proportion p= 26% =0.26 Sample Proportion…

Q: A personal trainer wanted to test the effectiveness of two different workout routines. She took a…

A: Obtain the 85% confidence interval for the average difference in the effectiveness of the two…

Q: Is there a significant difference between the youth who favour lower legal drinking age from the…

A: Here From given information Claim : 40% of the youth in a city are favor of lower legal drinking age…

Q: 2. In a certain special education school, a sample of 144 students was chosen and among these, 48…

A: Claim : proportion of ADHD students in the school is not 0.40.

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.