The Tampa Bay (Florida) Area Chamber of Commerce wanted to know whether the mean weekly salary of nurses was larger than thatof school teachers. To investigate, they collected the following information on the amounts earned last week by a sample of schoolteachers and a sample of nursesSchool Teachers ($)Nurses ($)1,0951,0761,1401,0771,0711,1251,0211,0341,1001,059 1,0521,109 1,0751,0701,0791,0911,079 1,8801,092 1,082Is it reasonable to conclude that the mean weekly salary of nurses is higher? Use the 001 significance level, Hint For the calculations,assume the nurses as the first sampleClick here for the Excel Data FileRequired:o. Is this a one-tailed or a two-tailed test?One-tailed testO Two-tailed testRequired:a. Is this a one-tailed or a two-tailed test?One-tailed testO Two-tailed testb. State the decision rule. (Negative values should be indicated by a minus sign. Round your answer to 3 decimal places.)The decision rule is to reject He Ift isgreater than c. Compute the value of the test statistic. (Round your answer to 3 decimal places.)The test statistic is t

There are two independent samples which follows normal distribution. We have to test whether the…

Answered: The Tampa Bay (Florida) Area Chamber of…

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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According to Financial Executive, disability causes 48% of all mortgage foreclosures. Given that 20 mortgage foreclosures are audited by a large lending institution. What is the population mean number of foreclosures due to disability? 10.2 foreclosures 8.4 foreclosures 9.6 foreclosures 8.0 foreclosures
Please help answering this one:
The mean price for used cars is $10,145 . A manager of a Kansas City used car dealership reviewed a sample of 50 recent used car sales at the dealership in an attempt to determine whether the population mean price for used cars at this particular dealership differed from the national mean. The prices for the sample of 50 cars are shown in the table below. 11,359 10,829 10,380 11,454 13,176 8,397 12,559 6,594 11,558 12,653 10,750 6,319 12,018 11,176 11,644 8,221 12,408 11,007 10,063 8,583 12,736 8,142 12,681 6,435 6,297 6,906 11,064 12,476 12,103 6,240 6,668 7,427 13,041 11,237 7,131 10,306 8,228 10,245 7,683 9,775 11,166 6,524 6,487 8,317 11,815 9,836 10,249 11,173 7,156 8,307 b. What is the p-value? Enter negative value if your answer is negative. t-value (to 3 decimals)
According to the National Automobile Dealers Association, the mean price for used cars is $10,192. A manager of a Kansas City used car dealership reviewed a sample of 50 recent used car sales at the dealership in an attempt to determine whether the population mean price for used cars at this particular dealership is below the national mean. The prices for the sample of 50 cars are shown in the file named UsedCars. 12400 10400 12100 10000 11000 8895 7675 9975 6350 10470 9895 11250 8795 12500 9340 10150 9200 9395 11000 10640 10000 7500 8000 10440 10200 10300 9740 9280 10930 8000 9000 7680 9400 10730 7350 12240 11970 8240 9910 10080 9440 8970 9500 10050 10130 11400 8500 7500 9090 10500 d. Report the critical value(s) associated with a 5% level of significance. What is your decision based on the critical value approach? (Reject Ho or fail to reject Ho?) e. Compute the p-value of the…
Suppose the mean price for used cars is $10,198. A manager of a Kansas City used car dealership reviewed a sample of 50 recent used car sales at the dealership in an attempt to determine whether the population mean price for used cars at this particular dealership differed from the national mean. The prices for the sample of 50 cars are shown in the file named UsedCars. 12,400 10,400 12,100 10,000 11,000 8,895 7,675 9,975 6,350 10,470 9,895 11,250 8,795 12,500 9,340 10,150 9,200 9,395 11,000 10,640 10,000 7,500 8,000 10,440 10,200 10,300 9,740 9,280 10,930 8,000 9,000 7,680 9,400 10,730 7,350 12,240 11,970 8,240 9,910 10,080 9,440 8,970 9,500 10,050 10,130 11,400 8,500 7,500 9,090 10,500 (a) Formulate the hypotheses that can be used to determine whether a difference exists in the mean price for used cars at the dealership. H0: ? ≤ 10,198 Ha: ? > 10,198 H0: ? < 10,198 Ha: ? ≥ 10,198 H0: ? = 10,198 Ha: ? ≠ 10,198 H0: ? > 10,198 Ha: ? ≤ 10,198 H0: ? ≥ 10,198…
Please answers questions a through d. Thank you!
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean score on test Number of ninth graders Glenwood 76 272 Central City 93 325 Lincoln High 73 180 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.7 . Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place.mean of all ninth grader's scores =
We asked UST employees to tell us how many megabytes of memory (RAM) they have on their computer. WWe would like to test to see if the mean amount of memory is the same for three different academic departments. We have the memory amounts for six faculty members' machines in the three departments shown below. Dept. 1 Dept. 2 Dept. 3 1 2048 4096 4096 2 2048 2048 4096 3. 2048 2048 8192 computer 4 2048 4096 8192 2048 2048 4096 6. 2048 8192 4096 Here is the ANOVA table: Analysis of Variance Source DF Adj SS Adj MS F-Value P-Value Factor 34952533 17476267 XXX 0.020 Error XX 51030699 3402047 Total XX 85983232 Calculate the value of the F test statistic and enter here:
Maria D to peop. vns and manages a small business in San Francisco, California. The business provides breakfast and brunch food, via carts parked along sidewalks, he business district of the city. Being an experienced businessperson, Maria provides incentives for the four salespeople operating the food carts. This year, she plans to offer monetary bonuses to her salespeople based on their individual mean daily sales. Below is a chart giving a summary of the information that Maria has to work with. (In the chart, a "sample" is a collection of daily sales figures, in dollars, from this past year for a particular salesperson.) Sample Sample Sample size Groups mean variance Salesperson 1 108 209.6 2334.6 Salesperson 2 62 206.2 2597.4 Salesperson 3 116 220.0 1913.2 Salesperson 4 120 225.4 2540.4 Send data to calculator Send data to Excel Maria's first step is to decide if there are any significant differences in the mean daily sales of her salespeople. (If there are no significant…
We asked UST employees to tell us how many megabytes of memory (RAM) they have on their computer. We would like to test to see if the mean amount of memory is the same for three different academic departments. We have the memory amounts for six faculty members' machines in the three departments shown below. Dept. 1 Dept. 2 Dept. 3 1 4096 4096 4096 2 4096 2048 4096 4096 2048 8192 computer 4 8192 4096 8192 4096 2048 4096 6. 2048 8192 2048 Here is the ANOVA table: Analysis of Variance Source DF Adj SS Adj MS F-Value P-Value Factor 5592405 2796203 XXX 0.604 Error XX 80390827 5359388 Total XX 85983232 Calculate the number of degrees of freedom Error. 3.
Review the following admission and discharge rates from a local hospital within a 24-hour period. Admissions 896 on Jan. 1, 2017 649 on Jan. 2, 2017 1,503 on Jan 3, 2017 Discharges 764 on Jan. 1, 2017 543 on Jan. 2, 2017 672 on Jan. 3, 2017 Answer the prompts using the information provided. Identify the information above that represents a data set. How do you know this is a data set? Identify the information above that represents a database. How do you know this is a database? What was the discharge rate for Jan. 2, 2017? What was the admission rate for Jan. 3, 2017? Which day had the highest percentage of patients discharged within the 24-hour period? What can you infer from this data? What important information is missing from this data?
The average grade for a group of students in a statistics exam was 85 points, with a standarddeviation of 3 points.a. What proportion of students have at least 80 points on the exam? b. What proportion of students have less than 80 points on the exam?

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