An organization published an article stating that in any one-year period, approximately 8.2 percent of adults in a country suffer from depression or a depressive illness. Suppose that in a survey of 100 people in a certain town, six of them suffered from depression or a depressive illness. Conduct a hypothesis test to determine if the true proportion of people in that town suffering from depression or a depressive illness is lower than the percent in the general adult population in the country. p' = Calculate ?x. Find the p-value.

Q: A study of 100 Stat 101 students revealed that the 55th percentile of their final exam scores is 45.…

A:

Q: Are most student government leaders extroverts? According to Myers-Briggs estimates, about 82% of…

A: Given Information: Probability of college government leaders are extroverts (po) = 0.82 The…

Q: Two popular brands of tires for tractor-trailers are the Puma and the Eternal. Ann is a buyer for a…

A: given data puma tiresx¯1  = 54.71s12 = 5.95n1 = 14eternal tiresx¯2  = 50.21s22 = 37.75n2 = 15α =…

Q: A U.S. government survey in 2007 said that the proportion of young Americans that earn a high school…

A: Solution: Given information: n=100 Sample size p= 0.87 Population proportion.

Q: nfortunately, arsenic occurs naturally in some ground watert. A mean arsenic level of -8.0 parts per…

A: a)   Consider that μ is the population average of arsenic level.

Q: A dietician is researching two new weight gain supplements that have just hit the market: Ripped and…

A:

Q: Suppose a study reported that the average person watched 1.87 hours of television per day. A random…

A: Consider that μ is the population mean amount of television watched by the average person per day.

Q: Researchers collected data on the numbers of hospital admissions resulting from motor vehicle…

A: Given Information:

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

A:

Q: Which of the following are the appropriate hypotheses to be tested? Ho=0.69 Ha> 0.69 0 Ho: p = 0.69…

A: Given that Sample size (n)=325 found that 234 had pet  Population proportion (p)=0.69 We have to…

Q: Before every​ flight, the pilot must verify that the total weight of the load is less than the…

A: From the provided information, Mean (µ) = 182.2 lb Standard deviation (σ) = 36.2 lb Let X be a…

Q: Suppose that a national survey finds that 73 percent of restaurant employees say that work stress…

A:

Q: The National Survey of Family Growth conducted by the Centers for Disease Control gathers…

A: The confidence interval for population mean is computed by , where ME is the margin of error. When…

Q: Obesity is an increasing problem in America amang all age groups. A recent study reported 1276…

A:

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: As part of a wide ranging study of health and nutrition, investigators collected information for a…

A: # option (a) is correct

Q: hypothyroxinemia in premature infants is a cause of subsequent motor and cognitive abnormalities…

A: a) Excel Procedure: Enter X and Y data in Excel Go to Data Click on Data Analysis> ‘Regression’.…

Q: uppose a researcher is interested in evaluating the effectiveness of a new teaching method on…

A: x1 =135x2 = 160 s1 =10s2 = 5 n1 = 25 = n2

Q: The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National…

A: We have given that  Sample size n1= 8860  , n2 = 23351 Sample mean xbar1 = 64.8 , xbar2 = 70.0…

Q: he U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National…

A: Solution: Given information: n1= 8860 Sample size of  sample 1n2= 23351 Sample size of  sample 2x1=…

Q: The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National…

A: Sample size n1= 9440 , n2= 24.053 Sample mean xbar1 = 63.6 ,xbar2 = 72.8 Population standard…

Q: A meta-analysis (Anderson & Bushman, 2001) reported that the average correlation between time spent…

A: Given that the sample size is n= 21 and correlation coefficient is r= 0.19 We state hypothesis:  H0:…

Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…

A: The random variable daily zinc intake follows normal distribution. We have to test whether average…

Q: Before every​ flight, the pilot must verify that the total weight of the load is less than the…

A: Given weights of men (passengers) are normally distributed with mean 183.2 lb and standard deviation…

Q: Suppose that we draw a sample of size 49 from a population which has an incomplete gamma…

A: From the given information, Consider, X is the random variable that has incomplete gamma…

Q: The standard deviation of return on investment A is 19%, while the standard deviation of return on…

A:

Q: Retinitis pigmentosa (RP) is a hereditary ocular disease in which patches of pigment appear on the…

A: The provided data is as follows TimeVisual Field Area (degree2)ln(Visual Field…

Q: A researcher was interested in comparing the resting pulse rates of people who exercise regularly…

A: Given: Group 1- People who exercise regularly. Group 2- People who do not exercise regularly.

Q: The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National…

A: We have given that  Sample size n1= 8860 , n2= 24170 ,  Sample mean x1= 61.4 , x2= 70.6 , sigma1=…

Q: A researcher is interested in the relationship between total student debt after graduating college…

A:

Q: The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National…

A:

Q: Suppose the number of off springs a female eagle raises during its lifetime has a distribution with…

A: Given information: µ=18 σ2=4 n=45 The total number of off-springs produced by the eagles can be…

Q: The recommended intake for Calcium for adults is 1000 mg per day. A researcher is interested to…

A: The researcher is interested to determine if adults with high income level have more calcium intake…

Q: Let x1 be a random variable that represents the time interval (in minutes) between Old Faithful…

A: Given : Let x1 be a random variable that represents the time interval (in minutes) between Old…

Q: The US Geological Survey complied historical data about Old Faithful Geyser from 1870 to 1987. Let…

A: To compute:  95% confidence interval for u1-u2. (use 2 decimal places)

Q: Before every​ flight, the pilot must verify that the total weight of the load is less than the…

A: From the provided information, Mean (µ) = 181.5 Standard deviation (σ) = 37 X ~N (181.5, 37) Sample…

Q: The 2006 Statistical Abstract of the United States reports on a survey that asked a national sample…

A: Given that  Sample size (n) = 80000 Suppose  that one-third of all American households own a pet…

Q: 3. Two companies compete in the production of laser printers. The impact strength of a printer…

A:

Q: A population with u = 45 and o = 10 is standardized to create a new distribution withu= 100 and o =…

A:

Q: he U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National…

A:

Q: Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an…

A:

Q: What would the observed OR have been... 1. If 20% of all the inactive men had been misclassified as…

A: in part 1) we have asked odd ratio when 20% of all the inactive men had been misclassified as active…

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.