A random sample of 400 adults are classified according to the marital status and their drinking habits. The data gathered is given below: Test the hypothesis using the chi-square (X2) test of independence @ 0.05 level of significance. Drinking Habits Single Married Widowed Total Nondrinkers 29 74 18 Moderate Drinkers 32 75 39 Heavy Drinkers 55 61 17 Total 400

Q: ed States. Assume that a simple random sample has been selected. Use a 0.10 significance level to…

A: The provided information is as follows:The population mean under the hypotheses is given as .The…

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

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Q: Listed below are the lead concentrations (in µg/g) measured in different Ayurveda medicines.…

A: From the provided information,Sample size (n) = 10Level of significance (α) = 0.05

Q: Use a 0.01 significance level to test the claim that the mean lead concentration for all such…

A:

Q: A group of students measure the length and width of a random sample of beans. They are interested in…

A: Given: Variable 1 = X = length Variable 2 = Y = width Mean width: 7.555 Stdev width: 0.914…

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A: The question is about hypo. testing Given : No. of occupied rooms in current year ( x1 ) = 1476…

Q: Listed below are the lead concentrations (in µg / g) measured in different Ayurveda medicines.…

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Q: Do cars get better gas mileage on the highway? The table shows the mileage per gallon of cars on…

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

Q: Listed below are the lead concentrations (in µg/g) measured in different Ayurveda medicines.…

A: 2.96,6.47,6.00,5.49,20.47,7.52,12.01,20.49,11.51,17.54sample size(n)=10significance level()=0.10

Q: Do men and women differ, on average, in terms of the amount of television that they watch each day?…

A: Since here the researcher wanted to determine whether there is a difference in mean number of…

Q: State the null and alternative hypothesis as an expression

A: Given that x1=12.5 x2=13.9 s1=3.9 s2=5.2 n1=14 n2=17

Q: A software company is interested in improving customer satisfaction rate from the 80% currently…

A: The Null and Alternative Hypotheses is given by: H0: p0=0.80 H1: p0≠ 0.80 The sample proportion is…

Q: Current Year Previous Year Occupied Rooms 1,505 1,411 Total Rooms 1,750 1,700

A: Solution:- from given information x1= 1505     ,n1=1750 x2= 1411     ,n2=1700 null hypothesis…

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: Example White X1 1 4 2 6 1. Calculate the appropriate test statistics to determine if the groups are…

A: The given data is below White(X1)Black(X2)Latino(X3)Other(X4)14314795295366452996To find :…

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

A: Given data A software company is interested in improving customer satisfaction rate from 61%…

Q: A recent poll revealed the political affiliations of 237 Americans, along with the region of the…

A: The χ2 test is a non-parametric test.

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A: Introduction: Denote p1, p2, p3, and p4 as the true proportions of adults using social networking…

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Q: A software company is interested in improving customer satisfaction rate from the 50% currently…

A: The null and alternative hypothesis is defined as:

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…

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A: Please note that as per our guidelines if multiple sub-parts are there in a question we can answer…

Q: Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported…

A: Answers are in images uploaded below and calculation of p value is explained in last step. Thanks!

Q: Provide an example of a research project in your hometown where the one-sample chi-square test would…

A: A chi square test is used to test the comparison between observed and expected results. The main…

Q: Arsenic in Rice Listed below are amounts of arsenic in samples of brown rice from three different…

A:

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: Listed below are the lead concentrations (in ug /g) measured in different Ayurveda medicines.…

A:

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: proportion of bats with a wingspan greater than 10 inches living outside the region is different…

A: n = 80 Sample proportion = 20/80 = 0.25

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

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Q: Miss America winners from the 1920's and 1930's had a average BMI of 19.4. A sample of recent…

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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: 1. A high school principal wanted to know if there was a difference in absences for 9th grade, 10th…

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

Q: A variety of variables were measured for all tornadoes in the United States in 2017. (a) Since 1950,…

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Q: An investigator is using a chi-square test to compare the proportion of patients with a successful…

A: It is given that 25 subjects were given 4 treatments. Here we will take alpha=0.05 We need to find…

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

A: The following information is provided: The sample size is N=247N = 247, the number of favorable…

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Q: A sample survey by Comcast asked a random sample of customers about use of the Internet and about…

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A: Formula for  coefficient of determination :  R2 = 1-SSESST Where,  R2 is coefficient of…