Suppose a one sided test for a proportion resulted in a p-value of 0.06. What would the p-value be if the test were two tail test? Select one: A. It would still be 0.06. B. It would be 0.3. C. It would be 0.12. D. There is no way to calculate this without completely redoing the original test with a new alternative hypothesis.

Q: Suppose it is claimed that the proportion of OSU students who belong to a fraternity or sorority is…

A: Given: Test is two-tailed and z = 0.40. The required P-value can be obtained by using the standard…

Q: Public relation companies conducted two surveys about deodorants.  The first survey asked a random…

A: Given ; n1 = 500 n2 = 550 p̂1 = 0.68 p̂2 = 0.44

Q: Suppose that you wish to find a population proportion p with accuracy ±2% with 99% confidence. What…

A:

Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…

A: From the given information, let p1 be the proportion of adult smokers in state A.  Let p2 be the…

Q: A local college recently made the news by offering foreign language-speaking dorms to its students.…

A:

Q: 6) How many people should I poll to guarantee the actual error on PN is less than e with 90%…

A: Given information: N = Total number of people polled N. p^N=Number of people polled who supported…

Q: It is claimed that the proportion of OSU students who belong to a fraternity or a sorority is 0.15.…

A: P value will claculated by using z table

Q: A normal population has a mean of µ = 80 with σ = 20. a. If a single score is randomly selected…

A:

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A: Solution:

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A: From the provided information,

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A:

Q: Suppose we are interested in carrying out the following test: Họ :p = 0.50 H. :p > 0.50 What is the…

A: Given Information: Sample Proportion = 0.43          Sample Size     = 35 Now since the sample size…

Q: To test whether the mean of a population is greater than 20, the appropriate null hypothesis is that…

A:

Q: me that a sample is used to estimate a population proportion p. e given statistics and confidence…

A: The value of z at 98% confidence level is 2.33, which can be found by using the standard normal…

Q: 3. For a population with µ = 40 and o = 8, what is the z-score corresponding to X = 34?

A:

Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…

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

Q: A hospital has studied its patient history and had concluded that 2% of patients that have been…

A: Given: Proportion of patients infected with staff bacteria = 2100=0.02

Q: For a population with µ = 40 and σ = 8, what is the z-score corresponding to X = 34?

A: Given  µ = 40 and σ = 8 , X=34

Q: Suppose that on a hypothesis test for a single population mean, Ha: p < 0.3. For fixed sample size…

A: We have given that,  The alternative hypothesis is,  Ha : p &lt; 0.3 for a fixed sample size and…

Q: If a sample of n = 4 scores is obtained from a normal population with µ = 70 and σ = 12, what is the…

A: Sample size, n = 4 Mean = 70 Standard deviation = 12 Sample mean = 69 (Raw score)

Q: An independent-measures study is analyzed using the appropriate t-test, and the APA summary is t(56)…

A: Introduction: Denote μ1, μ2 as the true population means for the two groups being compared.

Q: A cell phone manufacturing company claims that their phone batteries last up to 48 hours without a…

A: Given that A cell phone manufacturing company claims that their phone batteries last up to 48 hours…

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

A: GivenThe defective rate is 1%i.e.,p=0.01sample size(n)=4400

Q: What is the P (t < -0.3) with a sample size of 13.

A: The sample size is, n = 13 The degree of freedom is, df= n-1   =13-1   =12

Q: The newspaper in the previous problem decides to increase the size of its random sample of citizens…

A: Given Data: Previous sample size=250 New sample size=500

Q: A​ state-by-state survey found that the proportions of adults who are smokers in state A and state B…

A: Consider p1 as the proportion of adults who are smokers in state A and p2 as the proportion of…

Q: A hospital has studied its patient history and had concluded that 2% of patients that have been…

A: Given: 2% of patients have been admitted with staff bacteria.

Q: help me fix a please !!

A: State the hypotheses. That is, the population proportion of the people who answered “Yes” is the…

Q: A manufacturer of potato chips would like to know whether its bag filling mac underfilling the bags.…

A: we are given that  mean = 414gms variance = 169 n = 50  we need to test if the machine is…

Q: Calculate the P-value for a sample of 40 observations with a sample proportion of 0.6 if the null…

A:

Q: 4. Find the point estimate of the proportion of people who wear hearing aids if, in a random sample…

A: We have given that, x= The number of people who wear the hearing aid   = 30 n= The total number of…

Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…

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

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A: Solution: Given information: n1= 500 Sample size of men n2= 550 Sample size of women p1^= 0.68…

Q: If all other values are held constant, what happens to the value of t when sample size increases ?

A: The formula to calculate t value (test statistic) can be written as:

Q: Is sunscreen with an SPF 30 rating more effective at preventing sunburn than sunscreen with an SPF…

A: Denote p15, p30 as the true population proportions of sunburn people who wear SPF 15 and 30…

Q: Before working with percentages in confidence intervals and hypothesis tests for p, change them to…

A: Confidence or testing formula always given in proportion form.

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny What size…

A:

Q: A student organization is trying to decide whether or not to offer more movies on campus. They want…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: What is the P(t > -0.4) with a sample size of 13.

A:

Q: In a survey of 1037 US adults ages 65 and over, 643 were concerned about getting the flu. A 99%…

A:

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

A:

Q: A reader wrote in to the “Ask Marilyn” column in Parade magazine to say that his grandfather told…

A: The null hypothesis is a simple statement about the value of the population parameter which is…

Q: When conducting a right-sided hypothesis test concerning a population proportion, which of the…

A: Consider that p is the true proportion.

Q: Public relation companies conducted two surveys about deodorants.  The first survey asked a random…

A: The number men (n) is 500.

Q: How many people should I poll to guarantee the actual error on pN is less than e with 90%…

A:

Q: In a random sample of 1000 persons from town A, 400 are found to be consumers of wheat. In a sample…

A:

Q: Set up the null and alternate hypotheses to test whether the population mean is equal to 10 when you…

A: The Null hypothesis is  Ho: μ=10

Q: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is μ=11.00 Mbps.…

A: Consider that μ defines the population mean smartphone carrier’s data speed at airport.   Null…

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.