A pizza delivery chain advertises that it will deliver your pizza in 35 minutes from when the order is placed. Being a skeptic, you decide to test and see if the mean delivery time is actually more than 35 minutes. For the simple random sample of 7 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 39.4 minutes with a standard deviation of 5.5 minutes. Assume that the population distribution is approximately normal. Perform a hypothesis test using a 0.025 level of significance.   Step 2 of 3 :   Compute the value of the test statistic. Round your answer to three decimal places.

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: The objective of this question is to test the claim that there is a significant difference between…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: The question is about hypo. testing Given : Popl. mean amount of wireless data used by teenagers ( μ…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Let be the group runners training for marathons be population 1 and       be the individual runners…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Sample mean (x̅1) = 42.8Sample mean (x̅2) = 40.9Sample size (n1) = 34Sample size (n2) = 41Standard…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: The objective of this question is to test the claim that there is a significant difference between…

Q: The distribution of scores for the third exam in a statistics course has a mean of 74 and a standard…

A: Given Information: Mean, μ=74 Standard Deviation, σ=15 Sample Size, n=36

Q: Choose a quantitative variable.  Measure it on two different samples of 10, drawn from two different…

A:

Q: health economist does a study on the average life expectancy of every country in Europe.  The…

A: Given, mean life of the country is 81.2 and standard deviation is 3.7. Z-score is 1.2. We will use…

Q: Russell is doing some research before buying his first house. He is looking at two different areas…

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Q: Part ii) Suppose the number of printers drawn is quadrupled. How will the mean of the sample mean…

A: From the given information, The mean of the distribution is 17.57 ppm and the standard deviation is…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Solution

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: The objective of the question is to state the null and alternative hypotheses for the test. The null…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: The objective of this question is to test Ella's claim that the average amount of wireless data used…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: given data, population distribution is approximetly normal.α=0.005n=16claim:μ<5x¯=4.6s=1.5test…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: State the null and alternative hypotheses for the test. Fill in the blank below. H0: μ=6:…

Q: A statistics professor announces that 15% of the grades he gives are As. The results of the final…

A: It is given that the mean and standard deviation are 83 and 6, respectively.

Q: r a standardized psychology examination intended for psychology majors, the historical data show…

A: Given: The corresponding z score can be calculated as: The distribution will be normal as the…

Q: oretta, who turns  91  this year, has heard that the mean systolic blood pressure among the elderly…

A: Given: Sample size (n)= 19 Sample mean x¯=130 Sample standard deviation (s) = 20 Hypothesized mean…

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A: It is given that the mean is 25 and the standard deviation is 6.5.

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: The objective of this question is to compute the value of the test statistic for Ella's claim that…

Q: What proportion of the students scored lower than 80 if the distribution of these grades can be…

A:

Q: An HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute).…

A: Let X denotes the printing speed of printer  Population mean =17.57  Standard deviation =3…

Q: Full-time college students report spending a mean of 29 hours per week on academic​ activities, both…

A: Givenmean(μ)=29standard deviation(σ)=4sample size(n)=64

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…

A: Given,sample size(n)=33mean(μ)=5.97standard deviation(σ)=0.1

Q: Colette, a rancher from Colorado, herds a specific breed of cattle. The weight for this breed is…

A: Given X is normal Distributed with mean µ = 1800.0 and standard deviation σ = 125.0 now will using…

Q: During this pandemic, almost all universities and schools have online learning. As a result,…

A: Let X be the test score of the student which is normally distributed with mean 74 and standard…

Q: Suppose a population has a mean happiness score of 75 and a standard deviation of 15. Researcher A…

A:

Q: students has an average of 300 dollars and a standard deviation of 1,000. Suppose that we take a…

A: It is given that the random variable X i.e, the amount of money in savings accounts follow normal…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: Given Hypothesized mean = 7 Gb sample mean , x = 6.2 Gb sample standard deviation , s = 1.7 Gb level…

Q: A fruit-canning company produces 250ml pineapple juice cans at its bottling plant. The population…

A: Given that, The population standard deviation for volume of pineapple juice filled in the cans is,…

Q: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

A: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

Q: Find a 90% interval estimate of the mean daily time spent on rigorous exercise by all employees.

A: From a random sample of 25 employees, the mean time spent on vigorous daily exercise was 28.5…

Q: A market researcher wants to estimate the amount of money that a Christmass hopper will spend on…

A:

Q: You obtained IMDB scores of all movies and see that they are normally distributed with a mean of 6.7…

A:

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Given data,n1=40x1=46.6σ1=4.6n2=45x2=48.8σ2=2.4Compute value of test statistic?

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A: Given: p = 35% = 0.35 n = 1000 The variance is calculated as: The standard deviation can be…

Q: Assume that the heights of American men are normally distributed with a mean of 69.1 inches and a…

A: From the given information we find the solution

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Let be the group runners training for marathons be population 1 and       be the  individual…

Q: The scores of individual students on the ACT Exam are modeled as normally distributed with a mean of…

A:

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: In hypothesis testing, we start by stating the null hypothesis (H0) and the alternative hypothesis…

Q: Suppose a claim is made that the mean age of members of a golf club is 52 years. The population…

A: Given: μ = 52 σ = 6 n = 50 X = 56 Formula Used: Test-statistic Z = X-μσn