Do the data appear to have a distribution that is approximately normal?O A. Yes, it is approximately normal.O B. No, it is not symmetric.O C. No, it has no obvious maximum.O D. No, it is approximately uniform. The table below shows the frequency distribution of the rainfall on 52 consecutive Fridaysin a certain city. Use the frequency distribution to construct a histogram. Do the dataappear to have a distribution that is approximately normal?Class0-0.190.20 -0.390.40 -0.590.60 -0.790.80 -0.991.00 - 1.191.20 - 1.39Frequency23121282 AN4Choose the correct histogram below.O A.B.O C.3020-110-0-0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.430-20-10-0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4.30-20+10-0+0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4QQQ

It is given thatThe table shows the frequency distribution of the rainfall on 52 consecutive Fridays…

Answered: Do the data appear to have a…

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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ne students took the SAT test twice without doing any sort of preparatory course between the two tests. Their scores are listed below. Use the data to test the claim that in the population of all such students, the differences between the scores have mean 0. Student A B C D E F G H I First score 480 510 530 540 550 560 600 620 660 Second score 460 500 530 520 580 590 560 640 690 a. Define the parameter A. mu Subscript d Baseline equals Mean of the first score B. mu Subscript d Baseline equals Mean of the second score C. mu equals Mean score D. mu Subscript d Baseline equals Mean of (First score - Second score) b. State the null and alternative hypotheses A. Upper H 0 : mu Subscript d Baseline equals 0 Upper H 1 : mu Subscript d Baseline greater than 0 B. Upper H 0 : mu Subscript d Baseline…
is 20. Determine d so that the average value of the function y = 3 x + 2 40 35 30 25 20 15 10 2 4 6 10 12
Over doses from opioids have captured the national spotlight. Rightly so they kill nearly 30,000 Americas a year and cause more than 1 million hospitalizations. However, the misuse of over-the-counter pain medications (e.g. Tylenol, Advil, Aleve) can cause stomach bleeding, ulcers, liver disease and, in some cases, death. Approximately 80% of Americans use these medications to relieve headaches, backaches, sore muscles, and reduce fever but they are unaware of the dangers if the drugs are not used correctly. A random sample (n=101) of adults were given a questionnaire to ask the question "How often do you use pain medication in one day?". Using the output, histogram, box- whisker plot, and the QQ Plot attached - check the assumption of normality for this data. PainNormalityInformationoutputhistbox 210317.pdf The assumption of normality was checked by comparing the and the median. This suggests that the distribution is slightly The + The is between the acceptable range of -3 and +3.…
Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0.42. ← 2 Sketch the region. Choose the correct graph below. OA. R F2 W S X H The probability is (Round to four decimal places as needed.). ommand 0.42 #3 80 F3 E Q D Ľ $ 4 C F4 R F 25 % V B. e F5 T G 0.42 I 6 MacBook Air B Fo Q Q Y H & 7 0 √ F7 U B N O C. 8 V -0.42 0.42 DII - M 1, (1) More ( 9 C K DD F9 O V - ) 0 L F10 P command OD. Time Remaining: 00:18:04 Next ^. ^ -0.42 - - ... I 4 F11 { + "1 [ option = ? 1 I F12 } ] delete L
Green Auto periodically has a special week-long sale. As part of the advertising campaign, Green runs one or more television commercials during the weekend preceding the sale. Given are seven observations for two variables, x and y. Number of TV Ads (x) 1 3 2 1 3 4 3 Number of Cars Sold (y) 14 24 15 13 27 28 21 (E). Compute the coefficient of determination R^2. Comment on the goodness of fit. (F). Use the F test to test the hypotheses (α = 0.05): ??0: ??1=0; ????: ??1≠0 State the conclusion and the reasons (i.e., rejection rule).
J 1
Find the mean and standard deviation for each uniform continuous model. (Round "Mean" answers to 1 decimal place and "Standard deviation" answers to 4 decimal places.) Mean Standard deviation a. U(2, 12) 7 b. U(100, 250) 175 c. U(2, 99) 50.5 know I need the standard deviation when I try to calculate it and enter my answer it says its wrong, need help
longley is a built-in R data.frame which is sometimes used in economics to study regression. We are interested in some descriptive statistics related to the Employed column of the longley data.frame. We can access this data directly by using the assignment x <- longley$Employed (In R, use ? Longley for info on this data) The values of x if assigned as above are: [1] 60.323, 61.122, 60.171, 61.187, 63.221, 63.639, 64.989, 63.761 [9] 66.019, 67.857, 68.169, 66.513, 68.655, 69.564, 69.331, 70.551 You should get these values from the R assignment above rather than manually entering the data. b. Calculate the 3rd quartile of x using the R summary function c. Calculate the sample range & median of x h. What proportion of the x values are less than 1 sample standard deviation from the sample mean? k. How many of the elements of x are smaller than the sample mean of x?
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Do the data appear to have a distribution that is approximately normal? O A. Yes, it is approximately normal. O B. No, it is not symmetric. OC. No, it has no obvious maximum. O D. No, it is approximately uniform.