Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 446 randomly selected adults showed that 63​% of them would erase all of their personal information online if they could. Find the value of the test statistic.   The value of the test statistic is ??

Q: You want to determine if the graduation rate of different than the known national graduation rate.…

A: The researcher is interested to determine if the graduation rate of high-school students is…

Q: According to a Gallup poll taken on September 10th, 1998, 31% of a sample of adults thought that…

A: Sample size = sample size is the number of completed responses your survey receives or (randomly…

Q: Claim: Fewer than 92​% of adults have a cell phone. In a reputable poll of 1137 ​adults, 82​%…

A:

Q: An insurance company crashed four cars of the same model at 5 miles per hour The costs of repair for…

A: Data given  425,428,463,248

Q: You want to know what percentage of students own pets at your university. In asking 10 random…

A: In an observational study, researcher observes the individuals and measure the outcomes. In this…

Q: Determine the sample proportion. It has been determined with 95% confidence that the proportion of…

A:

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: You have a sample of 10 (sorted) scores:   -15.5 -13.4 -12.7 -12.2 -11.1 -10.8 -9.1 -8.9 -7.9 -7.1…

A: -15.5-13.4-12.7-12.2-11.1-10.8-9.1-8.9-7.9-7.1Sample of size(n)=10

Q: A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on…

A: 19.2,21.3,18.8,20.4,21.1,19.4,19.2,20.7,20.5sample size(n)=9

Q: Identify the population and sample. In a random sample of Salinas residents, 137 said they would…

A: Population: The population in a statistical study is the entire group of individuals about which we…

Q: A student would like to estimate the average number of text messages sent by cell-phone users in a…

A:

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: During the 2019 Baseball season, the Pittsburgh Pirates the 25 players had an average (mean) salary…

A: $ 0.1

Q: 31 of 48% is what?

A: 31 of 48%

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: A veterinarian is interested in the habits of the dogs who come in. He wants to estimate what…

A: The objective of the question is to conduct various statistical tests and intervals based on the…

Q: The mean salary of twelve men is $52,000, and the mean salary of four women is $85,000. Find the…

A: From the given information,

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

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: Claim: Fewer than 93​% of adults have a cell phone. In a reputable poll of 1170 ​adults, 87​% said…

A:

Q: fragrance free laundry soap.

A: To test the percentage of customers who prefer fragrance free laundry soap.   This can be done using…

Q: If you want to conduct a study to determine how much people exercise from a certain town, what would…

A: In this scenario, it is appropriate to call randomly selected cell phone numbers of people living in…

Q: You plan to conduct a survey to estimate the percentage of adults who have had chickenpox. Find the…

A: It is needed to find the number of people who must be surveyed if one wants to be 93% confident that…

Q: Medical Marijuana? An international poll of physicians was conducted on the New England Journal of…

A: a. In a poll conducted on the physicians which asked about “Do you believe that the overall…

Q: 29 randomly selected students were asked the number of movies they watched the previous week. The…

A: Frequency distribution is a table that display the observations and the frequencies of each of the…

Q: Determine what the key terms refer to in the following study. An insurance company would like to…

A:

Q: Ten students take a 10-point test. The mean score is 8. Could the median be 10? Could the median be…

A: Solution-: Ten students take a 10-point test. The mean score is 8. Could the median be 10? Could the…

Q: 395 out of 500 women were in favor with the new brand of skin whitening. What is the point estimate…

A:

Q: poll of 60 people asking “do you prefer dogs or cats?” Was taken, and 53 of those surveyed said they…

A: Sample size n =60 Favorable cases x =53 Sample proportion p^=x/n  =53/60 =0.8833 Population…

Q: A researcher wants to do a study to see what the proportion of vaccinated people is in a certain…

A:

Q: An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair…

A: Given cost of crashes are 404,441,468,231   Sort the data in ascending order. 231,404,441,468

Q: We'd like to know the percentage of people living in California who owns a cell phone. How many…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.95.

Q: ​Claim: Fewer than 94​% of adults have a cell phone. In a reputable poll of 1150 ​adults, 85​%…

A:

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

A: Given,margin of error(E)=0.025Assume sample proportion(p^)=0.5α=1-0.90=0.1α2=0.05Z0.05=1.645   (from…

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

A: The random variable X follows binomial distribution. The confidence level is 90%. The margin of…

Q: laim: Fewer than 96​% of adults have a cell phone. In a reputable poll of 1017 ​adults, 86​%…

A:

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

A:

Q: An online shop owner believes that 85% of her customers will want to go into a real store. She…

A: It is given that the an online shop owner believes that 85% of her customers will want to go into a…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.