Question 6.136What is the T-Value?What is the degrees of freedom for this problem? What is the closest p-value? EFigurt and are a acestor is actie> AnswerSolutionQAA6.136 Football Air Pressure During the National Football League's 2014 AFC championship game, officials measured the air pressure on 11 of the game footballs being usedby the New England Patriots. They found that the balls had an average air pressure of 11.1 psi, with a standard deviation of 0.40 psi.a. Assuming this is a representative sample of all footballs used by the Patriots in the 2014 season, perform the appropriate test to determine if the average air pressure infootballs used by the Patriots was significantly less than the allowable limit of 12.5 psi. There is no extreme skewness or outliers in the data, so it is appropriate to use the t-distribution.b. Is it fair to assume that this sample is representative of all footballs used by the Patriots during the 2014 season?6.137 Homes for Sale The dataset HomesForSale has data3¹ on houses available for sale in three Mid-Atlantic states (NY, NJ, and PA). Table 6.2 shows the mean and

Sample size=11 Sample mean =11.1 Sample standard deviation =0.40

Answered: Figurt van aard af at for this statis…

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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In baseball there are many ways to estimate what a team's winning percentage (w) should be against its opponents, given the total runs it has scored and the total runs it has allowed in a certain number of games. Bill James's Pythagorean Formula for the winning percentage estimator is given below. wpe = w = [(# runs scored)2]/[(# runs scored)2 + (# runs allowed)2] A team has currently scored 369 runs and allowed 329 runs. If the team does not allow any more runs for the rest of the season, how many additional runs must they score in order to have a wpe of 80%? (Hint: Let x = the number of runs additional scored.)
Problem: Customers are complaining about sandwich length You are the owner of three local sandwich shops. Recently you've received complaints from customers that their "footlong" sub sandwiches were less than 12 inches long. As a measure of quality assurance, data was collected on all footlong sub sandwiches made over the period of an hour at each store. Determined which, if any, of your stores are making sub sandwiches that are significantly shorter than 12 inches. You will conduct three t-tests, one for each store. You want to be 95% confident in your results. (Note. This case is inspired by reality. Search the internet for 'claims over footlong sub' for a historical perspective and how a company used statistics to insure consistent quality.) Sandwich Measurements Statistics Store 1 Store 2 Store 3 Store 1 Store 2 Store 3 8.8 9.1 9.0 Sample Size 11.4 11.6 12.5 Mean (length) 13.4 13.4 15.1 Variance 11.3 11.4 14.3 Standard Deviation 10.1 10.3 10.8 12.4 13.8 Hypothesized Mean (M)…
Find a recent journal article(peer reviewed scientific publication) in a field of interest to you which contains references to p-values. I will help you find an article if you want, tell me what you’re interested in. How large is the p-value? Do you think the results of this study are strong? How might they be stronger? Is there anything the authors should have included?
Stoaches are fictional creatures, sometimes mistaken for mome raths. Suppose a two-tailed t-test is conducted to test for a difference between the population means of adult female stoach weights and adult male stoach weights. The female sample has 13 weights, and the male sample has 7 weights. The t-statistic for the test is -0.20542. What is the p-value? (Give your answer to 4 decimal places.) p-value:
price/pound US dollars w A apples plums Fig 1. Inconsistency of prices for common fruit items among twelve major cities oranges This graph shows the difference in average fruit prices, as measured in twelve major cities across the world. The error bars represent + 2 SE. • Is there a statistically significant difference between the average price of apples and plums? How do you know? • Is there a statistically significant difference between the average price of apples and oranges? How do you know?
Question(14): A researcher wanted to know whether children who live in two different neighbourhood (Willowdale and Forresthill) got different amount of excerise. Children were randomly selected from the two neighbourhoods (40 in each). and filled out the daily activity report to measure their excerise. The number of minutes of excerise were tallied and recorded. The The researcher then conducted an independent sample t test using MS-EXCELL. The result are shown in the image below. Inspect the MS- EXCELL output.Did the researcher conduct their t test assuming equal variance.? Write out Step 5 by including both the formal answer and the conclusion. The five steps are: Step 1:State the hypotheses and identify the claim. Step 2: Compute the test value Step 3: Compute the critical value. Step 4:Make the decision (reject or not reject) Step 5:Summaize the results. Note: you only need to submit step 5, and round snswer to decimal places MS-EXCELL output:…
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R2.43. Vehicle weights The Minnesota Department of Transporta- tion hoped that they could measure the weights of big trucks without actually stopping the vehicles by using a newly developed "weigh-in-motion" scale. After installation of the scale, a study was conducted to find out whether the scale's readings correspond to the true weights of the trucks being monitored. In Chapter 6, Exercise 52, you examined the scatterplot for the data they collected, finding the association to be approximately linear with R² = 93%. Their regression equation is Wt = 10.85 +0.64 Scale, where both the scale reading and the predicted weight of the truck are measured in thousands of pounds. a) Estimate the weight of a truck if this scale read 31,200 pounds. b) If that truck actually weighed 32,120 pounds, what was the residual? c) If the scale reads 35,590 pounds, and the truck has a residual of -2440 pounds, how much does it actually weigh? d) If the police plan to use this scale to issue tickets to…

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