Pick the Test (Z-test, Single Sample T-test, Independent Sample T-test, Paired Sample Ttest, ANOVA):   10. A popular financial advisor states that, on average, a person should spend no more than $100 per month on entertainment. A researcher believes that the average person spends more than that and conducts a survey of 25 randomly chosen people. In that survey, the average monthly spending on entertainment was found to be $118.44, with a standard deviation of $35.00.   Test:

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending…

A:

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: 61.3% of all Americanslike pepperoni on their pizza. Is this a parameter or statistic? Why?

A: Parameter is a numerical measurement that describing a characteristic of a population.

Q: A hospital found out that there is a higher incidence of food poisoning in adults than in children.…

A: Given that, A hospital found out that there is a higher incidence of food poisoning in adults than…

Q: What is the sampling error for an estimate of the population proportion, p = 0.36, if the true…

A: We have to find the sampling error for an estimate of the population proportion

Q: health care provider conducted a survey to measure customer satisfaction. It sent out surveys to…

A: Non response bias :  It occurs when,  Participants in survey are unable to respond or they have no…

Q: Most adults would erase all of their personal information online if they could. A software firm…

A:

Q: shorter than 60 hours

A: For the given data : sample size, n = 10 sample mean, x̄ = 59.5 sample standard…

Q: What is the difference between sample means and a distribution of sample proportions?

A: Given : Sample mean : Average of sample observations is known as "sample mean". Sample proportion :…

Q: Does the sample size ? affect the mean of all possible sample means? Explain your answer.

A: According to central limit theorem, for large sample (>30) or if the population follows normal…

Q: In a study by Sallie Mae and Gallup, 223 of the 934 respondents said that they paid for their…

A: Obtain the 95% confidence interval for the proportion of students who paid for their education by…

Q: Use the following box plots to answer questions 5 and 6. Here are two box plots: 95 100 105 110 115…

A: 5. The median is represented by middle bar in the box of the given box plot. So, from the two…

Q: Dr. Hill, a physical therapist, compared the average length of office visits for his male and female…

A: Here, mean1 is 5.9 and mean2 is 6.3. Standard deviations are 2.2 and 1.7. Sample numbers are 7 for…

Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A:

Q: A shareholders group is lodging a protest against your company. The shareholders group claimed that…

A: Test - stats (t) = x¯-μsn

Q: which is the best sampling method for qualitative research, with a target population of 30?

A: Introduction There are 2 types of sampling method: Probability sampling method Non-probability…

Q: A researcher would like to determine if the proportion of households without health insurance…

A: Given information: Household income Yes No Less than $25,000 59 22 $25,000 to $49,999 142 40…

Q: Suppose that 5000 students who have taken the SAT exam once are randomly assigned to either take an…

A: From the provided information,

Q: In college age population 18-24, about 9.2% have hypertensuon. Suppose that a blood donor program.…

A:

Q: The General Social Survey determined in 2016 that 57% of US Residents think that the use of…

A:

Q: A hospital found out that there is a higher incident of food poisoning in adults than in children.…

A:

Q: ​Claim: Fewer than 95​% of adults have a cell phone. In a reputable poll of 1073 ​adults, 90​%…

A: Formula for Test statistic  Test statistic ( z ) z = ( p^ - p ) / ( √( p * ( 1 - p) / n) )

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: Although Nielsen Media research determined the precise proportion of all Americans watching the…

A: Given : Nielsen Media research determined the precise proportion of all Americans watching the super…

Q: According to a report on consumer fraud and identity theft, 24% of all complaints for a year were…

A: given data, claim:p>0.24x=857n=3401α=0.05we have to complete hypothesis for the given data,

Q: Most adults would erase all of their personal information online if they could. A software firm…

A:

Q: A poll asked whether states should be allowed to conduct random drug tests on elected officials. Of…

A: n = 21410 p^ = 0.72 99% ci for p

Q: Smallpox Vaccine. ABCNEWS.com published the results of a poll that asked U.S. adults whether they…

A:

Q: In a study of brand recognition, 821 of the 849 subjects recognized the Campbell’s soup brand. Use…

A:

Q: A marketing survey involves product recognition in New York and California. Of 200 New Yorkers…

A: Given, A survey involves product recognition 50 knew the product out of 200  n1=200, x1=55 77 knew…

Q: Random digit dialing telephone surveys used to exclude cell phone numbers. If the opinions of people…

A: Cell-only sample Landline sample Democrat or lean Democratic 49 47 Refuse to lean either way…

Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A: We want to test the hypothesis

Q: Round to the fourth as needed Requirements (part 1):       Requirements (part 2):       H0H0:…

A: Here one sample proportion test( tow tail z test of proportion )

Q: An on-line retailing firm conducts a study into the number of on-line purchases of footwear made…

A: The sample proportion value below which 10% of all sample proportions would lie is obtained below as…

Q: Smallpox Vaccine.ABCNEWS.com published the results of a poll that asked U.S. adults whether they…

A:

Q: Four scenarios of statistical studies are given below. Decide which study uses a population…

A:

Q: According to a report on consumer fraud and identity theft, 26% of all complaints for a year were…

A: In this case, it is needed to check whether the data provide enough evidence to show that Missouri…

Q: Why a casual or haphazard sample doesn’t qualify as a random sample?

A: Haphazard or casual sampling is where we try to create a random sample by haphazardly or casually…

Q: A record store owner finds that 15,0% of customers entering her store make a purchase. One morning…

A: Given,n = 188P = 0.15SE = ?

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…