According to a magazine, Chick-fil-A has the best accuracy of thrive thru orders with 96.4% of all its drive-through orders filled correctly. The manager of a competing fast food restaurant wants to advertise that her drive-through is more accurate than Chick-fil-A. In a random sample of 350 drive-through order, the manager found that 340 orders were found to be accurate. Test the managers claim at 0.05 level of significance.  a) what type of test should we use?  b) write a hypothesis and specify the type of test (tailing).  c) calculate (formula/values) The test statistic and determine the critical value.  d) State the decision of the test  e) Express your conclusion concisely using statistically appropriate language applied to the order accuracy.  f)

Q: A study was performed to determine the percentage of people who wear life vests while out on the…

A: Answer  Given  Sample proportion [p1] =0.886 Sample proportion [p2] =0.935 sample size [n1] =500…

Q: A large nationwide survey showed that 65% of high school students like Coca-Cola better than Pepsi.…

A:

Q: On a student survey, 49 out of 70 participants agreed that obeying traffic laws was important or…

A: Given that Sample size, n= 70 And x= 49 We know that, p=x/n = 49/70 p= 0.70 so q= 1-p q= 0.30

Q: A manufacturer wanted to know if more coupons would be redeemed if they were mailed to the female in…

A: Solution: Given information: n=50 Sample size  xd= 1.5   Difference of sample mean sd= 4.75…

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A: Suppose p is the true population proportion of college students, who are procrastinators.

Q: The time married men with children spend on child care averages 6.1 hours per week (Time, March 12,…

A: The hypotheses can be constructed as: H0: µ = 6.1 H1: µ ≠ 6.1 Sample size (n) = 40 Assume level of…

Q: One study claimed that 86% of college students identify themselves as procrastinators. A professor…

A:

Q: In 2013, Steve LeCompte, a stock market trader and analyst, did a study to see which TV…

A: We have given that  Sample size n =678 Favorable cases x =320 Sample proportion p^=x/n  =320/678…

Q: In a study of store checkout-scanners, 1234 items were checked for pricing accuracy; 20 checked…

A: It has been given that, Total items that were checked (n) = 1234 Number of items that are…

Q: A company has recently introduced a new hardware brand. The firm would like to estimate the…

A: From the given information, out of 150 randomly selected individuals from the target market segment,…

Q: An executive believes that no more than 80% of the company's employees take all of their vacation…

A: We have to find null and alternative hypotheses for given data...

Q: campus newspaper editorial claims that at least 75 percent of the students favor traditional course…

A:

Q: A marketing survey involves product recognition in New York and California. Of 37 New Yorkers…

A: In a survey in New York and California, 37 out of 197 knew the product in New York 99 out of 305…

Q: A research group claims that 20% of patients with dementia never develop full Alzheimer's. In a…

A: According to the given question, to test the hypothesis that the research group claims that 20% of…

Q: The personality characteristics of business leaders (e.g., CEOs) are related to the operations of…

A: Type of test : Two tailed Test

Q: A research study was conducted about gender differences in "sexting." The researcher believed that…

A: Solution:- from given information claim: The proportion of girls sending sexts is less than the…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: From the given information, Consider, X be the random variable that shows number of persons were…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: Given: n=2422x=666p=0.30α=0.01

Q: One study claimed that 86 % of college students identify themselves as procrastinators. A professor…

A: The question is about hypo. testingGiven :Popl. prop. of college stud. identify themselves as…

Q: A service station owner believes that equal numbers of customers prefer to buy gasoline on every day…

A: It is needed to test the whether the number of customers who prefers to buy gasoline on each day of…

Q: In 2013, Steve LeCompte, a stock market trader and analyst, did a study to see which TV…

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

Q: The XYZ company wants to evaluate whether it discriminates against men or women in its merit pay…

A: It is given that the XYZ company wants to evaluate whether it discriminates against men or women in…

Q: The Centers for Disease Control and Prevention reported a survey of randomly selected Americans age…

A: Setup of the Hypotheses:Null Hypothesis (H0​): There is no difference in the proportion of arthritis…

Q: A poll surveyed 503 video gamers, and 106 of them said they prefer playing games on a console rather…

A: Denote p as the true proportion of video gamer, who said they prefer playing games on a console…

Q: A recent study indicated that 18% of people free from cardiovascular disease were considered obese.…

A:

Q: Reports show that 92% of online searches in March 2021 use Google as the search engine. A network…

A: Given: p=0.92 p^ = 758800=0.9475 α = 0.05 to test the hypothesis of proportion of searches that use…

Q: home improvement company is interested in improving customer satisfaction rate from the 58%…

A: We have given that  Sample size n=273 favorable cases x=171  Population proportion p=58%=0.58 Sample…

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.