The Substance Abuse and Mental Health Services Administration (SAMHSA, 2017) estimates that 10.9%10.9% of the population of the United States age 18–2418–24 had an episode of depression in the previous 12 months.12 months. Suppose a researcher takes a random sample of 225225 United States adults aged 18–24.18–24. Determine the value of the sample proportion, ?̂ ,p^, such that 2%2% of samples of 225225 United States adults age 18–2418–24 are greater than ?̂ .p^. You may find software or a ?-tablez-table useful.

Q: In 1980, only 10% of the students in the city school district were classified as being learning…

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Q: An inspector of a production facility, which produces digital calculators, has collected 10 samples…

A: Given: Total defective =d = 15 Number of samples = k = 10 Sample size = n = 100 Z= 2

Q: What can be concluded at the αα = 0.05 level of significance?

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Q: A manufacturer of children's vitamins claims that its vitamins are mixed so that each batch has…

A: The random variable is children’s vitamins. It is mixed with four colors which are green, yellow,…

Q: A lecturer has determined from her past experience that at the end of the semester, 70% of her…

A: Here, the sample size is 200 and the expected number is Ei=np­i.

Q: A recent report stated that only 20% of all college graduates find work in the field of their…

A: Given data: Sample size = 400 x = 100 Consider significance level  = 0.05 To test the claim: Does…

Q: Are couples that live together before they get married more likely to end up divorced within five…

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Q: It was studied in the past that 38% of all adults favored death penalty. Do we have reason to…

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Q: In 2016, the US Department of Agriculture established a “maximum acceptable” salmonella prevalence…

A: Given that, 45 chicken parts test negative for salmonella out of 60 chicken parts. Hence, 15 chicken…

Q: A manufacturer of children's vitamins claims that its vitamins are mixed so that each batch has…

A:

Q: In 2016, the US Department of Agriculture established a “maximum acceptable” salmonella prevalence…

A: c) Power: The probability of rejecting the null hypothesis, assuming that the null hypothesis is…

Q: English Air continually monitors the proportion of overweight items checked by passengers on its…

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Q: At CPU, it is estimated that fewer than 25% of the students have cars on campus. Does this seem to…

A: Given : Let X : No. of students have cars on campus

Q: A researcher studied iron-deficiency anemia in women in each of two developing countries.…

A: From the provided information,

Q: According to the Fiji Diabetes Association, 23.1% of Fijians aged 60 years or older had diabetes in…

A: The hypotheses are given below: Null hypothesis: H0:p=0.231 Alternative hypothesis: H1:p>0.231…

Q: A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus…

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Q: A recent study at a local college claimed that the proportion, students who commute more than…

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Q: Suppose a recent random sample of employees nationwide who have a 401(k) retirement plan found that…

A: n = 100                      p^ = 19100=0.19x = 19α = 0.10claim ; p < 0.22

Q: In a survey by Bea et.al., it was found that 218 of 1,062 urban residents had a history of allergic…

A: From the provided information, 218 out of 1062 urban residents had a history of allergic disorder.…

Q: In a random sample of 85 automobile engine crankshaft bearings, 10 have a surface finish roughness…

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Q: Construct a sample (with at least two different values in the set) of 4 measurements whose variance…

A: Variance is a measure of variability and it is measured by taking the average of squared deviations…

Q: The Ministry of Education has announced that, if there is strong evidence showing that the…

A: p0=87%=0.87 X=Favorable=61 n=sample size=80 Alpha=0.10

Q: Only 18% of registered voters voted in the last election. Will voter participation decline for the…

A: Hypothesis to be tested: H0:p=0.18H1:p≠0.18 Sample proportion: p^=xn=50354=0.141

Q: Women: 53 patients had high blood pressure Required: Test Value Only the final answer should be…

A: Given :   n1= 168 n2= 168 significance level, 0.05 sample proportion p̂1…

Q: A marriage counselor has traditionally seen that the proportion p of all married couples for whom…

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Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: From the given information, n1=559, x1=445n2= 544, x2 =459α =0.05 Let p1 and p2 are proportions of…

Q: Are couples that live together before they get married more likely to end up divorced within five…

A: The null hypothesis is H0:p1=p2  and the alternative hypothesis is Hα:p1≠p2 Decide on the…

Q: It was claimed recently that more than 55% of high school students in the United States use…

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Q: With the increase in childhood obesity, the Pediatrics Association is concerned about the amount of…

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Q: An article claimed that "those with a college degree reported a higher incidence of sunburn than…

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Q: The bad debt ratio for a financial institution is defined to be the dollar value of loans defaulted…

A: The data of mean bad debt ratio of 65 banks are given and objective is to test whether the mean bad…

Q: In 2016, the US Department of Agriculture established a “maximum acceptable” salmonella prevalence…

A: b) Power: The probability of rejecting the null hypothesis, assuming that the null hypothesis is…

Q: To determine if there is a significant difference in the proportion of smokers among the blue collar…

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Q: In a sampie of 167 chiidren selected randomiy from one town, it is found that 20 of them suffer from…

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Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

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Q: Only 16% of registered voters voted in the last election. Will voter participation decline for the…

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Q: 2. The correlation coefficient between temperatures of rice and breakage percentage calculated from…

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Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Given that  Sample size n =200 Favorable cases x =30 Sample proportion p^=x/n  =30/200 =0.15

Q: It is of interest to determine if there is a significant difference in population mean IQ among…

A: Hypotheses: Null hypothesis: There is no difference in population mean IQ among students from three…

Q: 4. The CEO of a large company wants to test the claim that more than 20% of the company's employees…

A: The null and alternative hypothesesare: Ho: p = 0.20Ho:p=0.20 Ha: p > 0.20Ha:p>0.20 This…

Q: A random sample of 400 residents are asked if they are in favor of the proposed 10% vanity tax that…

A: It is given that n=400 and x=300.

Q: A manufacturer of children's vitamins claims that its vitamins are mixed so that each batch has…

A: The expected frequency is calculated by, ei=∑i=1nfitotal number of classwhere ei=expected frequency…

Q: The inside diameter of a randomly selected piston ring is a random variable with mean value 12cm and…

A: GivenMean(μ)=12standard deviation(s)=0.04sample size(n)=25

Q: Suppose you an analyzing a large ANOVA test that yielded a F-statistic of 7.89 and a MSE of 249.97.…

A: Given: F-statistic =7.89 MSE=249.97

Q: State the null hypothesis H0 and the alternative hypothesis H1 Find the z-test value find the…

A: Sample proportion = 140/225 = 0.6222 n = 225

Q: In 2010, shortly before a country's midterm elections, people in that country were dissatisfied with…

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Q: A marriage counselor has traditionally seen that the proportion p of all married couples for whom…

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Q: In a certain school district, it was observed that 29% of the students in the element schools were…

A: The provided information is:

Q: has been found that 25.1% of men (Group 1) 20 years and older suffer from hypertension (high blood…

A: Givan It has been found that 25.1% of men (Group 1) 20 years and older suffer from hypertension…