The table below gives the marks obtained by 10 B. Com students in statistics examination. Calculate standard đeviātion. R. No. 1 3 4 6 7 8 9 10 Marks 43 48 65 57 31 60 37 48 78 59
Q: A shoe manufacturer claims that athletes can increase their vertical jump heights using the…
A: From the provided information,Null hypotheses:
Q: What score/s lies -2sd from the mean?
A: Given data: DATA 87 92 92 78 95 89 96 94 90 78 94 87 77 94 83 87…
Q: 2. The data below summarizes marks on a test (out of 20) for a class of 33 students. Estimate the…
A: Answer:- Given, total frequency= 33 So, the frequency of the various classes is , Classes mid…
Q: A statistics professor would like to build a model relating student scores on the first test to the…
A: The data of first and second test grades of 21 students is provided as…
Q: A medical researcher conjectures that smoking can result in the wrinkled skin around the eyes. The…
A: Given, Let X be the smoker and Y be the non-smoker Smoker Non-smoker 10 4 8 2 7 5 9 1 5…
Q: The following table lists the distribution by degrees in psychology conferred by degree-granting…
A: We have given trend of degree confered sex wise since 1970-1971 so we have to find out what is trend…
Q: What is the correlation between the age and monthly salary of 10 employees?
A: Given: Age Salary 38 24 33 40 30 30 36 34 31 28 38 32 29 47 35 40 33 29 30…
Q: Show all your work. Indicate clearly the methods you use, because you will be scored on the…
A: Solution: a) A scatter plot is obtained by using the EXCEL. Procedure: Enter the data in EXCEL.…
Q: What is Variability between Groups?
A: Introduction: Consider k groups are to be compared with respect to their means, when it is known…
Q: Determine whether the following statements use the area of descriptive statistics or inferential…
A: Descriptive statistics uses data to provide a description of the population, either through…
Q: 7 Below is a histogram showing the total compensation for the 100 best paid presidents of public…
A: From histogram, We have to calculate Mean, median and mode Mid point= (lower class + upper class)…
Q: C6. The following cross-tabulation, based on GSS18SSDS-B data, examines the relationshin between age…
A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…
Q: The test scores of 32 students are listed below. What data value marks the 40th percentile? 32 37 41…
A: Test scores is 32. Percentile: 40%. Percentile value=Position at the product of number of test…
Q: Some people believe that different octane gasoline result in different miles per gallon in a…
A: The p-value of a test is the probability of getting a statistic as extreme (or more extreme) as the…
Q: 1. Carry out a poor man's ANOVA on this data. F2 CP F3 22 17 24 27 19 F1 25 35 32 22 40 36
A: F1 F2 F3 CP 1 32 22 27 24 2 36 17 40 25 3 19 35 22 Total 87 39 102 71 Null…
Q: Hi can you answer only d) and e) please
A: The rank of the given scores are obtained in table below- Scores Rank 82 10 85 13 94 17…
Q: The table below shows data for 40 worker’s weekly hours worked. Number of hours worked…
A:
Q: A survey was conducted to determine the distribution of home sizes in the state of Washington. The…
A: The homes that were surveyed larger than 4000 square feet come under the interval of 4000-5000 feet,…
Q: Based on the table of Source of Energy Distribution Table. What is the The mean weight of the 15…
A: Answer: Option D. 75 Explanation: Here we will have to find percentage of power derived from coal,…
Q: a. Used by competitors o. That does not currently exist in a organized form :. That already exists…
A: Secondary data is known as the data that are collected through public sources, i.e., census,…
Q: (b) At the a = 0.05 level of significance, use Fisher's LSD procedure to test for the equality of…
A: The data values are:123202821252520253124262815
Q: What are the laws of repetition of categories in statistics?
A: The law of averages is the commonly held belief that a particular outcome or event will, over…
Q: Lists grades of 80 students obtained in the final exam of an elementary statistics class. The grades…
A: a.) The minimum value is 28 and the maximum value is 93. Hence, we can construct the following…
Q: Iwo branches of statistics are O a. Ordinal and Interval O b. Ratio and Nominal O c. Primary and…
A: There are two main branches of Statistics, i.e, Descriptive and inferential statistics. Descriptive…
Q: The following are the box office totals (in millions) for some of the movies in which Jennifer…
A: Data 31, 96,59, 42,68,115, 51 Note: According to Bartleby guidelines, expert solve only one…
Q: . What is the test statistic? Round to 3 decimal places. ?v= . What is the p-value? Round to 5…
A: We have to determine test-statistic and p-value.
Q: iffere Japan P/E Ratio 152 28 19 127 38 212 65 664 32 69 United States P/E Ratio 16 25 25 42 23 15…
A: Japan US P/E Ratio P/E Ratio 155 12 26 23 18 23 127 45 36 21 215 13 63 26 664 13…
Q: What is R and why is there coding for R in basic statistics?
A: R is a statistical computing programming language that is designed only for statistical purposes.
Q: Some people believe that different octane gasoline result in different miles per gallon in a…
A: Given dataSome people believe that different octane gasoline result in different miles per gallon in…
Q: *BE SURE TO SHOW YOUR WORK. 1) A psychologist is studying children's aggression in different play…
A: Treatment 1 : Art area : N1 = 6 df1 = N-1 = 6-1 = 5 { 1,4,4,4,2,3 } Treatment 2 : N2 =6 df2 =…
Q: The table reports the number of weekly death according to age groups and their total for the past…
A:
Q: Major League Baseball (MLB) consists of teams that play in the American League and the National…
A: The independent variables are SO/IP and HR/IP. The dependent variables are R/IP and ERA. We have to…
Q: Is there a statistically significant difference between males and females in terms of hiring and…
A: Note: Hey there! Thank you for the question. As you have posted several sub-parts of a question,…
Q: Researchers wondered whether the size of a person's brain was related to the individual's mental…
A: Given: n = 3 Formula Used: r = n∑XY-∑X∑Yn∑X2-∑X2n∑Y2-∑Y2
Q: me people believe that different octane gasoline result in different miles per gallon in a vehicle.…
A: By applying a paired-t test sample size,n= 11 Mean (d̄) =Σd/n =-56/11 = -5.09…
Q: State at least 5 questions assessing demographic variables and state what kind of descriptive…
A: Demographic variable provide valuable information about the subject in the statistical analysis.
Q: Compute the test statistic. Always round t-score values to three decimals places.
A: Use Ti calculator to find the test statistic as follows: Select STAT > Edit > Enter the…
Q: Is there a relationship between test scores of persons who have gone through a certain job training…
A: Given: Following are the observed values. Poor Fair Good Total Below average 67 64 25 156…
Q: The price of a share of stock divided by the company's estimated future earnings per share is called…
A: The sample size n is 51.
Q: 1. Organizing and Graphing Data The pulse rates (beats per minute) of males obtained from a simple…
A: For the given data, to construct a desired frequency distribution, and as we want it to be…
Q: Using the data set below, what is the mean number of syphillis cases in Region 4 for the period…
A: Mean = Total/n Here n = 5 Total = 402+318+267+413+403 = 1803
Q: Teachers are being trained to standardize the scores they give to students' essays. The same essay…
A: The given data is, The scores before the training, 76 81 89 78 94 89 85 80 91 76 The scores…
Q: To test whether the mean time needed to mix a batch of material is the same for machines produced by…
A: We need to test whether the mean time needed to mix a batch of material is the same for machines…
Q: ome people believe that different octane gasoline result in different miles per gallon in vehicle.…
A:
Step by step
Solved in 3 steps with 3 images
- Please helpA local doctors office recorded the wait times for 70 patients on a saturday afternoon and organized he times in the histogram below a. what percent of people waited more than 15 minutes? b. what percent of people waited less than 20 minutes? c. what percent of people waited less than 5 minutes given they waited less than 20 minutes?What is the calculated mean age in Nj
- Some people believe that different octane gasoline result in different miles per gallon in a vehicle. The following data is a sample of 11 people which were asked to drive their car only using 10 gallons of gas and record their mileage for each 87 Octane and 92 Octane. Miles with 87 Octane Miles with 92 Octane Person 1. 234 237 257 238 3 243 229 4 215 224 114 119 6 287 297 315 351 8 229 241 9 192 186 10 204 209 11 547 562 Do the data support that different octanes produce different miles per gallon at the a = 0.02 level of significance? Note: A normal probability plot of difference in car mileage between Octane 87 and Octane 92 indicates the population could be normal and a boxplot indicated no outliers. a. Express the null and alternative hypotheses in symbolic form for this claim. Assume 4 = 4i – P2, where µi is the population mean mileage for Octane 87 and u2 is the mean mileage for Octane 92. Ho: 4, Select an answer V H1:µ, Select an answer V b. What is the significance level? c.…The mayor of Clifton has asked you to write a report using descriptive statistics to analyze income in the city. The mayor then asks you to write a report using inferential statistics to analyze income in the city. Can you use both descriptive and inferential statistics at the same time? Provide an example using descriptive statistics to analyze income. Provide an example using inferential statistics to analyze income.7. In the field of statistics, give an example of: a. A discrete variable. b. A continuous variable. c. A qualitative variable.
- Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: 98 60 59 66 69 73 52 88 63 74 61 84 58 59 52 Female: 83 75 93 94 87 63 94 89 93 79 77 85 74 70 76 ----- Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.)Please assist with 2,3 and 4. No hand writting.In order to compare two statistics textbooks, Mr.Marin recommends one book to one class and another book to another class. At the end of the year the classes are each examined; the results out of 100 marks are detailed below.Textbook 144 52 95 76 13 94 83 72 55 81 22 25 64 72 35 48 56 59 84 98 84 21 35 69 28Textbook 265 72 48 63 68 59 68 62 75 79 81 72 39 55 58 52 82 79 55 64 53 58 59 64 66 68 42 37(i) Calculate the mean and standard deviation for each class. (ii) Which class performed better?(iii) Which class was more consistent? (iv) Compute the coefficient of variation for each class. Comment on the results.(v) Construct a stem and leaf for each class.(vi) Compute their lower quartile, upper quartile, interquartile range and median for each class.(vii) Using a graph paper, draw a box and whisker plot for each class. Showing all parameters. Commenting on the distribution of the data set. Hence indicate whether there are outliers.
- Show workWrite a detailed note on following: 1. What are the application of statistics in computing sciences? 2. How statistics is helpful in software engineering and information technology field and also write its importance?A company's price/earnings (P/E) ratio is the company's current stock price divided by the latest 12 months' earnings per share. Suppose the following table shows the P/E ratios for a sample of 10 Japanese companies and 12 U.S. companies. Japan P/E Ratio 152 28 19 127 38 212 65 664 32 69 United States P/E Ratio 16 25 25 42 23 Find the value of the test statistic. W = 15.16 X 15 28 15 28 39 17 15 Is the difference between the P/E ratios for the two countries significant? Use the MWW test and α = 0.01 to support your conclusion. State the null and alternative hypotheses. Ho: The two populations of P/E ratios are identical. H₂: The two populations of P/E ratios are not identical. O Ho: Median for Japanese companies - Median for U.S. companies 20 H₂: Median for Japanese companies - Median for U.S. companies 0 O Ho: Median for Japanese companies - Median for U.S. companies > 0 H₂: Median for Japanese companies - Median for U.S. companies = 0 O Ho: The two populations of P/E ratios are not…