A new treatment for a severe allergy is claimed to have a better cure rate than the standard of care, which has 60% of cure rate. A random sample of 50 patients, suffering from allergy, are given the new treatment and as a result 34 are cured. a) Is the claim valid for a significance level of 0.05? Use p-value analysis. b) If you conclude that the claim is not valid,     i) what would be the required sample size to support the claim?     ii) otherwise, what would be the required sample size to unsupport the        claim     For the analysis in part b assume that the percentage change in n and          number of cured patients are exactly the same, i.e. if n is doubled, that is      n = 100, than number of cured people will also be doubled, i.e. 68 etc.)

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Givenmargin of error(E)=0.04confidence level(c)=95%

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Find z-critical value:…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Solution Critical value for Z: Refer Standard normal table/Z-table OR use excel function…

Q: It has been reported that 60% of U.S. school lunches served are free or at a reduced price. A…

A: State the Hypotheses•  Null Hypothesis (H0): The proportion of students receiving free or…

Q: The critical boundaries for a hypothesis test are z = +1.96 and -1.96. If the z-score for the sample…

A: Solution: The critical boundaries for a hypothesis test are z = +1.96 and -1.96. Z test statistic or…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: The 95​% confidence interval is  -----------<p1−p2<-------- here. ​(Round to three decimal places…

A: Given : x1= 43.0 n1= 49 x2= 76.0 n2= 93 significance level, 0.05

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Find z-critical value:…

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A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

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A: Given that, X1= 43, n1= 49 X2= 79, n2= 96

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: work for a marketing firm that has a large client in the automobile industry. You have been asked to…

A: a)When no prior research, the proportion (p̂) = 0.50Margin of error (E) = 0.03Confidence level =…

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Given Z=1.645 P=0.50 P cap=0.21

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: help please answer in text form with proper workings and explanation for each and every part and…

A: Part 2: ConclusionAnalyzing the effects of an increase in licensing costs for ride-share services…

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of​ echinacea, 43 of the…

A: From the provided information,

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: From the provided information, Confidence level = 95% Margin of error = 0.025

Q: A biologist is studying the plant diversity in 15 million acres of the Sierra Nevada Mountains. He…

A: The answer is given in below image:

Q: In a simple random sample of 78 NCAA Division III Football games, the team that scored first won the…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: The random variable is house with two or more vehicles.We have to find the sample size.This is One…

Q: t has a large client in the automobile industry. You have been asked to olds in Chicago that have…

A: Given

Q: A researcher wants to know whether athletic men are more flexible than nonathletic men. For this…

A: The given sample size for athletic men is 50, sample mean is 4.3, sample standard deviation is 2.1,…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: a) With no prior research, what sample size should you gather in order to obtain a 0.02 margin of…

A: margin of error = zα p(1-p)/n margin of error = 0.02 for 95% confidence interval zα = 1.96

Q: In a random sample of 315 people 90 of them were smokers. Based on the above sample test whether the…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Given Margin of Error, ME=0.04 Confidence=0.98

Q: ou work for a marketing firm that has a large client in the automobile industry. You have been asked…

A: Given data, E=0.015 z-value at 98% confidence is Zc=2.326

Q: You work for a marketing firm that has a large client in the automobile industry. estimate the…

A: Given,margin of error(E)=0.035α=1-0.95=0.05α2=0.025z0.025=1.96

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: Formula :

Q: industry. You have been asked to estimate the proportion of households in Chicago that have two or…

A: You have been assigned to gather a random sample that could be used to estimate this proportion to…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: given data, E=0.04CI=0.90α=1-0.90=0.10Z- CRITICAL VALUE :Zc:=zα/2=Z0.10/2=Z0.05=1.645 [from excel…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: We have to find the sample size to estimate the proportion. In part (a), there is no prior research…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: a)

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A:

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: (a)   Obtain the sample size of a no preliminary estimate for p.   The formula of sample size is,…

Q: In a survey, 36% of the respondents stated that they talk to their pets on the telephone. A…

A: The hypothesized proportion (p0) is 0.36.

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.