Customers at a large grocery chain spend no more than $130 per trip. After a city-wide adcampaign, the marketing department would like to determine if the customers are spending morethan $130 per trip.The next 25 customers averaged $135.25 per trip with the sample standard deviation of $10. At0.05 signifiance level, test if the customers are spending more than $130.1. Which of the following (A,B,C,or D) would be the correct hypothesis statement?A. Ho: p s 0.25 Hạip > 0.25В. Но: д > 130 Н: д < 130C. Ho: μ <= 130 Ha μ > 130D. Ho: μ 36 H μ362. The critical value is3. The statistical value in this problem is ...4. The p-value range associated with the test statistic is ...5. At a 5% level of significance, will the decision be to Reject or DNR?

Given data : sample size, n = 25 sample mean, x̄ = 135.25 sample standard…

Answered: Customers at a large grocery chain…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Cole Fingers owns 20,000 milk cows that he milks by hand. The total amount of milk produced by Cole’s cows varies from day to day depending on weather, noise, and other conditions. Cole has just finished milking 100 of the cows. An average of 2 gallons of milk per cow was obtained with a sample standard deviation of .5 gallons. a. What is your forecast for the total milk production today from all 20,000 cows? b. Construct an 68% confidence interval around your forecast.
The average McDonald's restaurant generates $3.6 million in sales each year with a standard deviation of 0.9. Trent wants to know if the average sales generated by McDonald's restaurants in Kentucky is different than the worldwide average. He surveys 27 restaurants in Kentucky and finds the following data (in millions of dollars): 4.1, 2.8, 4.4, 4.5, 5.3, 5, 3.7, 2.9, 3.8, 4.8, 3.6, 2.3, 3.7, 2.9, 2.9, 4, 1.1, 5.2, 2.9, 5, 4, 4, 5.9, 3.2, 2.2, 4.3, 3.8 Perform a hypothesis test using a 3% level of significance. Step 1: State the null and alternative hypotheses. Ho: [? v] ? v На: ? ? v (So we will be performing a Select an answer test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer v with distribution mean and distribution standard deviation Step 3: Find the p-value of the point estimate. P( ? v ? v = P( ? ♥ ?…
The average McDonald's restaurant generates $2.4 million in sales each year with a standard deviation of 0.7. Carissa wants to know if the average sales generated by McDonald's restaurants in New Mexico is different than the worldwide average. She surveys 18 restaurants in New Mexico and finds the following data (in millions of dollars): 2.1, 2, 2.9, 1.7, 1.8, 2.3, 2.1, 2.1, 3.3, 1.4, 1.6, 1.4, 1.4, 2.3, 2.6, 2.7, 2.7, 1.7 Perform a hypothesis test using a 8% level of significance. Step 1: State the null and alternative hypotheses. Ho: pv 2.4 Ha: Ev 2.4 (So we will be performing a two-tailed test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are normally distributed v with and distribution standard deviation distribution mean Step 3: Find the p-value of the point estimate. P(zv [ p-value = Step 4: Make a Conclusion About the…
The following data represents the number of blogs that a sample of students state they follow. 12, 3, 10, 9, 0, 1, 8, 7, 3, 10, 19 Calculate the standard deviation.
Given a set of data, which of the following refers to the independent observations? a. Variance b. Degrees of freedom c. standard error d. standard deviation
A truck is loaded with cartons of eggs that weigh an average of 1.8 pounds each with a standard deviation of 0.2 pound. A histogram of these weights appears mound-shaped and symmetric. What proportion of the cartons weigh less than 1.4 pounds? Select one: a. 5% b. 2.5% C. 95% d. 68%
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The following sample observations were randomly selected: X Y 5 4 10 7 3 7 4 6 6 5 What is the coefficient of correlation? Select one: a. 0.185 b. 0.001 c. 0.034 d. 0.089
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