A test of hypotheses H 0 p = 0.2 H 1 p ≠ 0.2 was performed. The P-value was 0.07. What is the probability of observing a test statistic as extreme as or more extreme than actually observed if p=0.2?

Q: Assuming the true proportion is 15%, what is the approximate probability that more than 10% of the…

A: It is given that n =750 and p =0.184.

Q: In a large population of college-educated adults, the mean IQ is 112 with standard deviation 25.…

A:

Q: The shelf life of a battery produced by one major company is known to be normally distributed, with…

A: Given that μ=3.8,σ=0.4

Q: Historically, about 51% of the babies born in the US are boys. A survey plans to study 650 randomly…

A: The sampling distribution of sample proportions is a normal distribution with mean equal to the…

Q: For a random variable that is normally distributed, with mean of 80 and standard deviation of 10,…

A:

Q: A sample of n = 4 scores is selected from a population with μ = 40 with σ = 8, and the sample mean…

A: The Expected value for the sample mean is 40 and it is obtained below:

Q: The average number of moves a person makes in his or her lifetime is 12. If the standard deviation…

A: From the provided information, Mean (µ) = 12 Standard deviation (σ) = 3.2 Sample size (n) = 36 a)…

Q: A clinical psychologist is writing a grant proposal. As part of this process, they are required to…

A: Given information- Population mean, µ = 80 Population standard deviation, σ = 12 Sample size, n = 9…

Q: The number of people getting sick from imported meat products in a certain city in one month was…

A: Given data,μ=190σ=22P(X>160)=?

Q: Thwhe average arm height of jaguars is 16 inches, with a standard deviation of 2 inches. out of a…

A:

Q: For a normal population with a mean of μ = 80, and a standard deviation of σ = 10, what is the…

A:

Q: The mean score in the college entrance examination of 50 with a standard deviation of 12. If a…

A:

Q: average salary for a large company is $85,000 with a

A: Given Data Population Mean,μ = 85000.0 Population Standard Deviation,σ = 20000.0…

Q: If systolic blood pressure (SBP) in the population is normally distributed with mean = 120 mm Hg and…

A: X~N(μ,σ)μ=120σ=15

Q: The entrance test scores for SHS in a certain school has a mean of 85 and a standard deviation of…

A:

Q: Q5. The mean and standard of the weights of identical concrete specimens are 150 and 45 lb…

A: GivenMean(μ)=150standard deviation(σ)=45sample size(n)=50

Q: fter deducting grants based on need, the average cost to attend USC is μ=$28,000. The population…

A: Given that  The average cost to attend USC is $28,000 Population mean (μ) = $28,000 Population…

Q: Q2: The electrical resistances of components are measured as they are produced. A sample of six…

A: Given: sample size n=6 sample mean m=2.62 ohms sample SD =0.121 ohms

Q: certain pen has been designed so that true mean writing lifetime under controlled conditions…

A: Given:n= 17The degrees of freedom is,df = n-1=17-1=16As the alternative hypothesis contains a…

Q: Let X be the number of successes in a fixed number of repeated trials and let p be the probability…

A: Let X be the number of successes in a fixed number of repeated trials and let p be the probability…

Q: Assume that you reject the null hypothesis of no-difference at a=0.05. This means that if you assume…

A: Statisticians use the conventional p-value method to conduct hypothesis testing.

Q: per minute (wpm). To test the claim, a random sample of 50 workers from the agency were given a…

A: P - value - The p-value is the probability of obtaining results as extreme as the observed results…

Q: As reported by the US Bureau of Census in Current Housing Reports, the mean livable square footage…

A: Here, mean is 1634 and standard deviation is 566.

Q: )A random sample of 200 observations from a normal population whose standard deviation is 100…

A: Givensample size(n)=200sample mean (x)=150standard deviation (σ)=100α=0.05

Q: The distribution of the amount of water used per wash cycle, in gallons, by a particular brand of…

A: Given information Mean (µ) = 4 Gallons Standard Deviation (σ) = 0.2 Gallon Probability that more…

Q: The GPAs of a large population of university students are approximately normally distributed with…

A: Let X denotes the GPA of the students of an university.  Then, X is normally distributed with mean…

Q: The cholosterol levels of men in the United States are normally distributed, with a mean 215…

A: 1. The cholesterol levels of men are normally distributed, with a mean 215 milligrams per deciliter…

Q: A random sample of size  25, taken from a normal population with a standard deviation of 5.2, has a…

A: From the given information, Consider, n1=25,  x1=81 ,  s1=5.2n2=36,  x2=76, s2=3.4

Q: The GPAs of a large population of university students are approximately normally distributed with…

A: The concept used:  Standard normal variate, Z is given by: Z=X-μσ

Q: In a recent study on world​ happiness, participants were asked to evaluate their current lives on a…

A: Given,mean(μ)=4.9standard deviation(σ)=2.3

Q: Suppose a clinical trial is conducted to test the efficacy of a new drug, spectinomycin, for…

A: a) The data describe the efficiency of a new drug, spectinomycin, for treating gonorrhea in females.…

Q: A normal distribution has a mean of 54, and a standard deviation of 6. What is the probability of…

A:

Q: For a populations mean of 22.3 and standard deviation 4, find the probability that the random…

A: The mean is 22.3 and the standard deviation is 4.

Q: The average price of a kilogram of ham is P1,300. Assume that the standard deviation is P150. If a…

A:

Q: A sample is selected from a population with a mean of p = 40 and a standard deviation of o- = 8. a.…

A: Given data,Mean μ=40sd σ=8

Q: In a biomedical research activity it was determined that the survival time, in weeks, of an animal…

A: Let X represents the animal of the type used in the experiment. Then according to the question,…

Q: Q3: The average number of bicycle accidents at on the road is 5 per week. 1- What is the probability…

A: The average no. of bicycle accidents on the road can be modeled using Poisson Distribution. i.e.,…

Q: Consider a binomial distribution for 4 trials and a probability of success of 0.16 on each trial.…

A: Consider a binomial distribution for 4 trials and a probability of success of 0.16 on each trial.…

Q: A manufacturer of a low-tar cigarette claims that its cigarettes contain an average of 16.3 mg. of…

A: Given information- Population mean, µ = 16.3 mg Population standard deviation, σ = 3.1 mg Let, X be…

Q: For an assumed actual value of $1000 for the population mean, 0.75 is plotted on the power curve.…

A: Curve of operating characteristic: If μ is a real value, the likelihood of considering the null…

Q: A. The average cost per household of owning a brand new car is 5,000. Suppose that we randomly…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A sample of n = 4 scores is selected from a normal population with a mean of µ = 50 and a standard…

A: Sample size, n = 4 Mean = 50 Standard deviation = 20

Q: A newborn baby is classified as having Extremely Low Birth Weight (ELBW) if it weighs less than 1000…

A: It is given that the mean is 815 and standard deviation is 100.

Q: For a normal random variable with mean 19,500 and standard deviation 400, find a point of the…

A:

Q: Assume that the population standard deviation on each part of the test is 100.a) What is the…

A: a). Given that: μ=502σ=100n=90 The z value of given data within 10 points of population mean:…

Q: For a two tail test, the p-value is the probability of obtaining a value for the test statistic more…

A:

Q: A certain type of stainless steel powder is supposed to have a mean particle diameter of 15 μm. A…

A:

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.