5) Accounting data for sales showed that in randomly selected 15 stores thequantities of products sold are:509, 517, 502, 629, 830, 911, 847, 803, 727, 853, 757, 730, 774, 718, 904Unsatisfied with those results, a company decided to start advertisingcampaign. After the campaign finished, the number of products sold inthese same stores were:517, 508, 523, 730, 821, 940, 818, 821, 842, 842, 709, 688, 787, 780, 901Did the advertising campaign produce statistically significant results?

A hypothesis which is tested for plausible rejection is called the Null Hypothesis (typically…

Answered: 5) Accounting data for sales showed…

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 2015, there was 146,571 deaths from unintentional injury in the United States. Among these were 47,478 deaths from poisoning, 37,757 from motor vehicle accidents, 33,381 from falls, 6,914 from suffocation, and 3,602 from drowning. A) Find the percentage of accidental deaths from each of these causes, rounded to the nearest percent. What percentage of accidental deaths were due to other causes? B) Make a well-labeled graph of the distribution of causes of accidental deaths.
The following data includes the year, make, model, mileage (in thousands of miles) and asking price (in US dollars) for each of 13 used Honda Odyssey minivans. The data was collected from the Web site of the Seattle P-I on April 25, 2005. year make model mileage price 2004 Honda Odyssey EXL 20 26900 2004 Honda Odyssey EX 21 23000 2002 Honda Odyssey 33 17500 2002 Honda Odyssey 41 18999 2001 Honda Odyssey EX 43 17200 2001 Honda Odyssey EX 67 18995 2000 Honda Odyssey LX 46 13900 2000 Honda Odyssey EX 72 15250 2000 Honda Odyssey EX 82 13200 2000 Honda Odyssey 99 11000 1999 Honda Odyssey 71 13900 1998 Honda Odyssey 85 8350 1995 Honda Odyssey EX 100 5800 Compute the correlation between mileage and price for these minivans. (Assume the correlation conditions have been satisfied and round your answer to 3 decimal places.)rr =
The utility company in the city of Harperville serves 20,000 residential addresses. The company wants to gauge interest in a “Beat the Peak” program which offers consumers a discount in exchange for limited electricity usage during peak hours. Unknown to the utility company, 18% of its 20,000 residential customers would participate in such a program. Since the company does not know the level of interest among its customers, the company selects every 40th account from an alphabetical listing of residential account holders, starting with the 23rd name. Of the 500 subscribers selected, 16% express interest in the “Beat the Peak” program. 1a) What type of sampling did the utility company employ? A. simple random sample B. systematic C. cluster D. stratified E. Voluntary response F. Convenience G. Judgement 2b) The utility company divides its service area into 5 zones. If the company had randomly selected 100 customers from each zone, which type of sampling would they have employed?…
The following data represents the number of engineers, technicians and administrators for 60 establishments affiliated with the Ministry of Industry and Trade. Required: tabulate the data in a recursive dump table using Yule and Sturges methods: 60, 76, 80, 120, 132, 82, 90, 65, 68, 73, 150, 142, 157, 164, 88, 90, 98, 101, 103, 110, 119, 116, 120, 126, 109, 114, 120, 122, 111, 116, 90, 78, 93, 95, 98, 104, 120, 113, 121 , 119, 125, 126, 130, 131, 136, 118, 142, 148, 150, 154, 122, 123, 139, 125, 156, 154, 136 , 137, 110, 136
10. For adults, certain type of cancers can be treated with multiple health interventions. To gain information about all Maryland-based treatment centers a survey is sent to a randomly chosen group of 25 Maryland based treatment centers that asks about the recommended interventions for cancer patients based on medical records, insurance, and income. All of the randomly selected treatment centers completed the survey. The sample is: For adults, certain type of cancers can be treated with multiple health interventions. To gain information about all Maryland-based treatment centers a survey is sent to a randomly chosen group of 25 Maryland based treatment centers that asks about the recommended interventions for cancer patients based on medical records, insurance, and income. All of the randomly selected treatment centers completed the survey. The sample is: a. the 25 Maryland-based treatment centers b. the medical records, insurance, and income c. all Maryland-based treatment…
Seven percent of those who invest in mutual funds consider corporate stocks to be “very safe”, 58% consider them “relatively safe”, 24% consider them “not very safe”, 4% consider them “not safe” and 7% "They are not safe at all." Business / Week / Harris asked 550 mutual fund investors how they would rate corporate bonds for safety. The answers were the following Seguridad Frecuencia Very safe 62 Relatively safe 323 Not very safe 76 Not safe 26 Not safe at all 63 Does the attitude of mutual fund investors differ from corporate bonds from their attitude to corporate stocks? Support your conclusion by giving a statistical test. Use α = 0.01. For this problem you must present: -Hypothesis-Result of the expected values, residuals and the calculation of the test statistic.-Analysis of the results in the chi square test and its conclusion in applied terms of the problem
We are interested in estimating the proportion of people that can identify Nebraska but not Vermont. In a class of 55 students, each student was requested to select a sample of 6 people, show each person a map of the US and ask the person to identify the states of Vermont and Nebraska. The following numbers are the counts that each student got, that is, each number is the count of people in the student sample of 6, that could identify Nebraska but not Vermont.3344010110020030002020001100002010000001000200000001010Note: You can cut and past these numbers into an excel spreadsheet to help you calculate the mean and the standard deviation and compute the confidence interval. If you have trouble pasting them, paste them to a text file first and then copy from there.When we collect all the students' data, we have a sample size of 6x55=330.Of the sample of 330 people, what proportion were able to locate Nebraska but not Vermont? (round answer to 3 decimals) Find a 95% confidence interval for…
The utility company in the city of Harperville serves 20,000 residential addresses. The company wants to gauge interest in a “Beat the Peak” program which offers consumers a discount in exchange for limited electricity usage during peak hours. Unknown to the utility company, 18% of its 20,000 residential customers would participate in such a program. Since the company does not know the level of interest among its customers, the company selects every 40th account from an alphabetical listing of residential account holders, starting with the 23rd name. Of the 500 subscribers selected, 16% express interest in the “Beat the Peak” program. The company also gathered other information from the 500 sampled accounts: number of people living in household __________ ["", ""] , __________ ["", "", "", ""] most frequently watched cable channel __________ ["", ""] , __________…
Nine data encounters are to be assigned to three jobs requiring 2, 3, and 4 encoders, respectively. How many ways can the nine encoders be assigned to the three jobs?
The Entergy Corporation had 2,600,000 electricity customers. Of these, 76.176.1% were in the residential category (R); 13.913.9% were commercial (C); 2.52.5% were industrial (I); and 7.57.5% were government and municipal (G). What is the value of P(C or G)?
Need 99% interval for all five countries.

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