A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has determined that home delivery will be successful if the average time spent on the deliveries does not exceed 40 minutes. The owner has randomly selected 42 customers and has delivered pizzas to their homes in order to test if the mean delivery time actually exceeds 40 minutes. Suppose the P-value for the test was found to be 0.0281. State the correct conclusion based on each significance level.

Q: The grade point average of 64 students selected to test the claim that the students in the Business…

A: Here the test carried out is a t-test for sample mean. The test statistic of the t-test is given by…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: given data  claim : μ < 2800   accept Ho reject Ho Ho true correct conclusion type I error…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: Given that SD=800

Q: 4. Felician University uses hundreds of fluorescent light bulbs each year. The brand of bulb it…

A: The mean lifetime of current brand that it uses is of 900 hours. The mean and standard deviation of…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: The hypothesized mean is 2800.

Q: A research company wants to estimate the mean IQ score for the population of all high school…

A:

Q: Activity trackers are electronic devices that people wear to record physical activity. Researchers…

A: Given Information:  Sample size (n) = 61  Mean value (x) = 9797 steps Standard deviation = 2313…

Q: A marketing firm wants to estimate the difference in the mean amount of caffeine in two brands of…

A:

Q: The weights of discarded plastic from a sample of 62 households have a mean weight of 1.911 lbs. The…

A: From the provided information, Sample size (n) = 62 Sample mean (x̅) = 1.911 lbs Standard deviation…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: Each hypothesis test helps to understand whether the sample taken from the population mean are…

Q: The P-value for this hypothesis was found to be:

A: The test statistic is, z=x¯-μσn=78-682025=104=2.5 The test statistic is 2.5.

Q: Step 1 of 4: State the null and alternative hypotheses for the test. Step 2 of 4: Compute the value…

A: Here given  A medical researcher wants to compare the pulse rates of smokers and non-smokers. He…

Q: 95 students who struggle in math classes at a large university were selected to participate in a…

A: Given: n1  = 49 n2  = 46 x1 bar = 83.1 x2 bar = 79.2 s1 = 5.2 s2 =  8.2

Q: The FDA regulates that fresh Albacore tuna fish contains at most 0.82 ppm of mercury. A scientist at…

A: The objective of this question is to determine whether the mean amount of mercury in tuna fish for a…

Q: On the basis of her newly developed technique, a student believes she can reduce the amount of time…

A: Let μ denote the average amount of time schizophrenics spend in an institution. The claim of the…

Q: The director of research and development is testing a new medicine. She wants to know if there is…

A: given that The director of research and development is testing a new medicine. She wants to know if…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101.7 and a standard…

A: GivenMean(μ)=101.7standard deviation(σ)=16.8

Q: You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at…

A:

Q: Can you conclude the mean price in 2013 is greater than the mean price in 2012?

A: Sample size is n = 70 Sample mean = 295 And population SD = 148 Test is that whether  the mean price…

Q: The claim is that for 12 AM body temperatures, the mean is \mu > 98.6 The sample size is n = 3 and…

A: Given: The researcher's claim is that for 12 AM body temperature, the mean value is greater than…

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: The operations manager of a sugar mill in Chesterville wants to estimate the average size of an…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The mean length of imprisonment for motor-vehicle theft offenders in Australia is 16.7 months.  You…

A: Given, The mean length of imprisonment for motor-vehicle theft offenders in Australia is 16.7…

Q: The DMV (the place where you get your driver’s license) hires a consultant to do something about all…

A:

Q: 6. The following sample of n = from a population with unknown parameters. 6 scores was obtained…

A: Given scores is7,1,6,3,6,7sample size(n)=6Let"x" be the set of given scoresx={7,1,6,3,6,7}

Q: A person must score in the upper 0.15% of admission test scores in order to qualify for a very…

A: A person must score in the upper 0.15% of admission test scores in order to qualify for a very…

Q: A test had 12 items. A new version of a test was made by adding a set of 12 items which resembles…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: the mean math score on the SAT exam is  M=500, the standard deviation G+100. a sample of 64 students…

A:

Q: A random sample of 84 products is selected and sample mean and standart deviation are found to be…

A: We have to find level of confidence.

Q: For a random sample of 90 overweight men, the mean number of pounds that they were overweight was…

A:

Q: The owner of a café has recently surveyed a random sample of n = 250 customers of the café. She…

A:

Q: The director of research and development is testing a new drug. She wants to know if there…

A: Given information- Population mean, µ = 375 Population standard deviation, σ = 24 Sample size, n =…

Q: The math test scores of 16 students from one high school showed a mean of 107, a standard deviation…

A: Hypothesis test evaluates two mutually exclusive statements about a population to determine which…

Q: Many people believe that the average number of Facebook friends is 142. The population standard…

A:

Q: According to a study, the proportion of individuals in which cover their mouths when sneezing is…

A: Z score for single proportion test is use for testing the proportion

Q: A manager states that in his warehouse, the average number of days per year missed by the employees…

A:

Q: The Crown Bottling Company has just installed a new bottling process that will fill 7-ounce bottles…

A: From the provided information, The Crown Bottling Company has just installed a new bottling process…

Q: Researchers doing a study comparing time spent on social media and time spent on studying randomly…

A:

Q: If the sample size (n) and probability of success (p) are given, which equations are used to…

A: 1) Given,Sample size = n (fixed)Probability of success = p (for each trial).So, probability of…

Q: he mean time taken to submit an assignment by a student was 20 days according to the previous…

A: Excel can be used to calculate the required sum