Test the claim that the proportion of people who own cats is smaller than 70% at the 0.01 significance level. Based on a sample of 500 people, 67% owned cats The p-value is:  (to 2 decimals)

Q: Use the appropriate statistical tables.  A recent survey showed that from a sample of 500 packages…

A: Given, A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480…

Q: A College Alcohol Study believes that there is a difference in the percentage of women and men that…

A: Given that, n1=1000,n2=1000 The type of test is two tailed test The value of test statistic is, z =…

Q: Find the Zc value for a 92% confident interval when the sample sizes 27

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Q: Which of these best describes the conclusion we could make using a 5% level of significance? Select…

A: The decision in the hypothesis testing can be made using two important methods. They are the p-value…

Q: Claim: Fewer than 93 ​% of adults have a cell phone. In a reputable poll of 1162   ​adults, 85 ​%…

A: Given information- Population proportion, p = 0.93 Sample size, n = 1162 Sample proportion is- We…

Q: The P-value for this sample

A: From part a), the degrees of freedom is 4. The test statistic is 42.37.

Q: How many degrees of freedom are in a repeated measures study with n=20 participants?

A: Degrees of freedom (DF) state that the number of independent values that can vary in an analysis…

Q: What is the mode for the following sample of n = 11 scores? Scores: 1, 2, 2, 2, 3, 3, 4, 5, 6, 6, 7…

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Q: What is the P VALUE? H(0) P= .68 H(A) P> .68 Sample size of 46.  63 People were surveyed. 48…

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Q: The 3rd quartile of the ages of 300 students of Math class is 22 years. Which of the following…

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Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given Information:Margin of error, E=1.5%=0.015Confidence level, c=95%=0.95

Q: Using a 5% significance level, determine the p - value if Ha: H 26, x = 28, n=28, and s= 3.6. A…

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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: ​Claim: Fewer than 90​% of adults have a cell phone. In a reputable poll of 1104 ​adults, 85​% said…

A: We have given that  Sample size n =1104 Population proportion p=90%=0.90 Sample proportion…

Q: A study claims that a normal female body has a temperature of 98.6 degrees Fahrenheit. The body…

A: The t test are used to make mean significant between the sample and population. It also used to make…

Q: ​Claim: Fewer than 92​% of adults have a cell phone. In a reputable poll of 1172 adults, 86​% said…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.92 Alternative hypothesis:…

Q: Imagine a researcher asks a sample of five people to drive two types of cars and rate each of them…

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Q: Three composition instructors recorded the number of spelling errors which their students made on a…

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Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: It is given that Favourable cases, x1 = 386Sample size, n1 = 590Favourable cases, x2 = 363Sample…

Q: if the 90% Ci for the population mean is (-2. 58, 7.54) what is the sample mean О a.248 ОБ. 10.12 O…

A: Confidence interval is defined as the range that contains the value of a true population parameter.…

Q: The Bata Shoe Museum states that 16% of women wear shoes that are too small for their feet. A…

A: 16% women wear shoes that are too small for their foot. So, proportion of women wear shoes that are…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: It is given that x=176, n=267 and P=0.61.

Q: A researcher studying the proportion of 8 year old children who can ride a bike, found that 219…

A: Given: n= 567 ,x= 219.0 Need to find sample proportion.

Q: According to a recent report, 21% of all adults routinely skip breakfast. A researcher believes this…

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Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A:

Q: A software company is interested in improving customer satisfaction rate from the 66% currently…

A: From the provided information, A software company is interested in improving customer satisfaction…

Q: Close Confidants and Social Networking SitesA previous exercise introduced a study in which 2006…

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Q: You intend to conduct an ANOVA with 7 groups in which each group will have the same number of…

A: There are 7 groups in which each group would have the sample number of subjects n=10, then the total…

Q: What mean would put 10% of he sample below it?   u= 450 o= 25 n = 81

A: μ=450,σ=25,n=81

Q: Q10. The length of parts produced by which lathe machine satisfies the normality assumption based on…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

A: From the given information, The population proportion is, p=55%=0.55 The company sponsored a survey…

Q: A researcher gathered from historical papers that the proportion for the success of an event was…

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Q: For a sample of n=16 scores, how many scores are used to calculate the sample variance?

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Q: A real estate agent compares the selling prices of randomly selected homes in two municipalities in…

A: The objective of this question is to determine if there is a significant difference in the average…

Q: A software company is interested in improving customer satisfaction rate from the 75% currently…

A: Hypotheses: The null and the alternative hypotheses are, H0:p=0.75H1:p>0.75

Q: A software company is interested in improving customer satisfaction rate from the 62% currently…

A: Population proportion is 0.62 Sample proportion is 90/135 =0.6667

Q: Three runs of an assay generate 72.49%, 72.99% and 72.40%. The average result needs to be accurate…

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Q: Professors collected data consisting of eye color and gender of statistics students. Among 912 male…

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Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

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Q: A middle school wanted to examine if students' sense of school belongingness increased after…

A: It is wanted to be examined by the middle school whether the sense of school belongingness of…

Q: ter screens were randomly selected from a large collection of computer screens in a company’s…

A: A sample is a part of the population, which is selected from the population and if the sample is…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: Sample size n =196 Favorable cases x =126 Sample proportion p^=x/n  =126/196 =0.6429

Q: A software company is interested in improving customer satisfaction rate from the 75% currently…

A:

Q: ​Claim: Fewer than 91​% of adults have a cell phone. In a reputable poll of 1119 adults, 83​% said…

A:

Q: Violent crimes include​ rape, robbery,​ assault, and homicide. The following is a summary of the​…

A: Given, the following is a summary of the​ violent-crime rate​ (violent crimes per​ 100,000…

Q: question in a poll taken in 2007 asked, "Do you think the penalties for underage drinking should be…

A: Given data, n=500 p=61% =0.61 Construct a 95% confidence interval?

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.