According to the NY Times Almanac the mean family size in the US. Is 3.18. A sample of a college math class resulted in the following familysizes:5; 3; 5; 4; 4; 3; 7:43254633; 27: 4:53; 23;4;2At a 0.05 level, is the class's mean family size greater than the national average?Note: If you are using a Student's t-distribution for the problem, you may assume that the underlying population is normally distributed. (Ingeneral, you must first prove that assumption, though.)Fart talState the null hypothesis.ⒸH: 44-3.18ⒸH: 43.18OH H=318OM4>3.18State the alternative hypothesis.OH ≤3.18OH, μ<3.18- HattilaⒸH-43.18 Part (blWhat is the p-value for the test?Part (3)State alpha. (Enter an exact number as an integer, fraction, or decimal.)PET(S)What is your decision?Ⓒ Reject the null hypothesis.O Do not reject the null hypothesis.Partle]Write a conclusion.There is sufficient evidence to support the claim that the class's mean family size is greater than the national average of 3.18.There is not sufficient evidence to support the claim that the class's mean family size is greater than the national average of 3.18PaninDoes the Almonor claim remain valid? Why?O The Aimanoc claim can still be considered valid, because the sample does not meet the requirements for inference. For instance, it isnot a randomly generated sampleO. The Almoeos dlaim cannot still be cons dered valid, because the samole meetsthe requirements for inference For instance it is ahtFundomly generated sampleDhed

The sample observations for the family size s given as: 5, 3, 5, 4, 4, 3, 7, 4, 3, 2, 5, 4, 6, 3, 3,…

Answered: According to the N.Y. Times Almanac the…

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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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:
Q2. The 30% trimmed mean of the following data (120, 15O, 170, 177, 178, 193, 198, 250, * :450, 955} is 186.5 O 182.5 O 188.3 183.5 O 184.5 O
Which statistic (mean, median, or mode) is most appropriate in each of the following situations? a. Tables in the dining hall are numbered 1 through 12 for students who eat there. The principal calls out a number for the table that will go through the buffet line first. The other tables follow in order of the table numbers. One student is sure the principal calls certain tables more often. She keeps track of which numbers are called over a 21-day period. Mean O Median Mode b. The offensive line of a football team is larger than in previous years. The program will list a statistic to show this fact. O Mean O Median Mode c. A reporter is doing a story on the falling prices of homes in a large neighborhood. The reporter wants to demonstrate how the prices have fallen for the typical home, not just the most expensive houses. Mean O Median Mode
The mean number of sick days an employee takes per year is believed to be about 10.5. Members of a personnel department do not believe this figure. They randomly survey ten employees. The number of sick days they took for the past year are as follows: 12; 4; 15; 3; 11; 8; 6; 8; 2; 9. Let x = the number of sick days they took for the past year. Should the personnel team believe that the mean number is ten?
The cities with the highest life expectancy are Nowhereville: 84.6 years; Somewhereopolis: 79.8 years; Kinch City: 79.8 years; Tortuga: 84.6 years; Euler Town: 78.5 years; Godelville: 84.6 years; Sirap: 90.1 years. Find the mean, the median, and the mode. ..... Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The mean life expectancy is years. (Round to the nearest tenth as needed.) B. The mean does not exist. Find the median. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The median life expectancy is years. (Round to the nearest tenth as needed.) B. The median does not exist. Find the mode. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode life expectancy is years. (Round to the nearest tenth as needed.) O B. The mode does not exist.
The U.S. National Center for Health Statistics complies birth statistics and publishes the results in vital statistics of the United States. The Center has historically believed that the mean of all newborns in the U.S. has been no less than 6.95 pounds. A sample of babies is selected so that the center can revise its belief. The following birth weights, in pounds are recorded: 7.4, 6.0, 8.6, 4.5, 2.0, 7.9, 4.0, 2.6, 5.9, 7.3, 7.3, 7.0, 6.3, 8.1, 7.1, 7.3, 6.6, 5.2, 9.8, 8.0, 10.9, 6.5, 3.8, 5.0, 8.0 a). At 5% level of significance, do these data provide sufficient evidence to refute the Center’s belief? Your conclusion must be in terms of the P-Value as well as setting up a Rejection Region. You must show all necessary work. b). Which statistical distribution should be applied in this situation and why? Explain carefully.
Hospitals In a study of births in New York State, data were collected from four hospitals coded as follows: (1) Albany Medical Center; (1438) Bellevue Hospital Center; (66) Olean General Hospital; (413) Strong Memorial Hospital. Does it make sense to calculate the average (mean) of the numbers 1, 1438, 66, and 413?

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