The mark distribution of 104 students are given in the following frequency table. Central rank of group 10 20 30 40 50 60 No. of students 7 8 13 29 35 70 3 Find the pass mark of the exam. [Ans: 33.46 (app)]

Q: What is the probability of a score less than 450 or greater than 750?  b. What proportion of…

A: It is given thatMean = 600Standard deviation = 80

Q: For a fully continuous 20-payment whole life insurance policy of 1,000 on (40), you are given: x (i)…

A: Given,The annual premiumInsurance type: 20-payment whole life insurance policy of 1000Age : 40

Q: Consider the following data: Month Jan-14 Feb-14 16,263 Profit ($) 16,113 Monthly Profit of an Auto…

A: Monthly Profit of an Auto Repair…

Q: f(x) = 2 (1-1/2) 0 1≤x≤2 otherwise

A: The pdf of the weekly demand for propane gas is,It is required to calculate the mean, median, and in…

Q: The results of inspection of DNA samples taken over the past 10 days are given below. Sample size is…

A: The given number of defectives for 10 considered days is given as…

Q: lan wants to figure out if there is a relationship between how much a piece of furniture weighs and…

A: Here the dependent variable (y) is the weight of the piece of furniture.The independent variable (x)…

Q: A game of coins ves mipping total number of heads facing up. Let's use X to denote the total number…

A: The following problem follows a Binomial Distribution, with success probability 0.5 and number of…

Q: If Upper X overbarXequals 9090, sigmaequals = 1111, and nequals 6969, construct a 9999% confidence…

A: It is given that the sample mean is 80, the population standard deviation is 11.

Q: P= 2,754 0.55D, 2.52C; +252G; +576PE; + 1,750Fi (0.12) (1.1) (135) (200) (450) P₁ = Annual employee…

A: The provided information is as follows:The regression equation is given as .

Q: 4. Let X₁,..., Xn iid. N(μ, 02). In this question, we will construct confidence interval for ². Let…

A: Let  be an independent identically normally distributed variable with mean μ and variance σ2i.e…

Q: d. What is the p-value? (Round your answer to 4 decimal places.) P-value → Answer is complete and…

A: ClothesFood Toys2744612249644637573556482847633142531734483143582057474751445154

Q: You would use a/an scale for data such as age, blood pressure, and annual salaries. A. Ratio B.…

A: Concepts of Ratio, Nominal, Ordinal, and Interval.Ratio Scale: A ratio scale is a type of…

Q: The following result perspective in RapidMiner shows a multiple linear regression model Based on the…

A: the model for our dependent variable Y is Predicted…

Q: Now monitor the process. An additional ten days of data have been collected, see table labeled “1st…

A: Using Excel, Day12345 Average…

Q: The following chart shows the actual sales for the last 12 months for a given company. Assume that…

A: The question related to linear regression analysis.The given bar chart shows the actual sales for…

Q: Determine the following percentiles for the standard normal distribution: a. 91st b. 9th c. 22nd…

A: Assume that  follows the standard normal distribution.

Q: Based on the following X-bar Chart for days 11-20 of monitoring a bagging process for 10 ounce bags…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Determine the sample size required for a c = 0 plan that will have at least 90% probability of…

A: Given,Lot size, Number of defective parts

Q: 9. Suppose that a grocery store purchases 5 cartons of skim milk at the wholesale price of $1.20 per…

A: For the distribution of the number of cartons that are sold from this lot is given as…

Q: To plot a box plot, we need to obtain mean instead of median of the data set.  a) True  b) False

A: The objective of the question is to understand whether we need to obtain the mean of the data set to…

Q: Impact of College Roommates on Grades In this exercise, we investigate answers to the questions: How…

A: The data table on bringing video games:The data for the roommate who do not bring a video game to…

Q: The correlation coefficient, R, measures a) whether or not a scatterplot shows an interesting…

A: The correlation coefficient, often denoted by R, is a statistical measure that describes the degree…

Q: a.   Using a weighted moving average with weights of 0.60, 0.30, and 0.10, find the July forecast.…

A: To find the July forecast using a weighted moving average with weights of 0.60, 0.30, and 0.10,…

Q: Let's Make a Deal: Monte Hall has three doors, two with goats and one with a Corvette. You're not…

A: Consider 3 doors: A,B, and C.Assume door A is picked.One of the doors has the car. And two of the…

Q: Values 2- 0- -2- Group 1 Data Set 1 Example Data by Groups Group 2 Group 3 Values 20 10- 0- -10-…

A: The F-statistic in an ANOVA (Analysis of Variance) test is used to compare the variances within…

Q: In the transmission of digital information, the probability that a bit has high, moderate, or low…

A: "Since you have posted a question with multiple subparts we will provide solutions only to the first…

Q: Sixty-nine percent of men consider themselves knowledgeable soccer fans. If 15 men are randomly…

A: According to the given information,Sixty-nine percent of men consider themselves knowledgeable…

Q: 1. Consider the following a set of data scores (a total of 25 scores, n =25): 2, 4, 8, 6, 7; 1, 3,…

A: 2, 4, 8, 6, 7, 1, 3, 3, 9, 5, 2, 5, 4, 7, 1, 6, 6, 3, 2, 8, 4, 3, 5, 4, 10

Q: Use the contingency table to the right to determine the probability of events.   a. What is the…

A: The table shows the contingency table for A and B.

Q: One of New England Air's top competitive priorities is on-time arrivals. Quality VP Clair Bond…

A: Given the data.Sample Late flights…

Q: Please do a Q-test and calculate the average based on the given data. 242 104 197 92 257

A: Consider the given data in ascending order,92,104,197,242,257

Q: How do you solve this? There are 92 1's and 28 2's (total is 120)

A: Total sample size is Number of 1's is 92.Number of 2's is 28.

Q: In a certain community, 70% of the family has 2 cars,  55% have kid(s) and 50% have 2 cars and…

A: The objective of this question is to find the probability that a randomly selected household has 2…

Q: When two measures are related such that as the value of one measure, increase, the value of another…

A: The relationship referred when  measures are related such that as the value of  measure, increase,…

Q: Sampling 4 pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24…

A: The data for the range is given…

Q: FRQ #1 - In terms of work/answers, think about what is needed to get ESSENTIALS (not partials) In…

A: The objective of the question is to calculate the percentage of players who played the game and were…

Q: The following table represents undergraduate students at a local university. One student is chosen…

A: The objective of the question is to calculate various probabilities based on the given data about…

Q: uppose you want to estimate the percentage of tweets on Twitter that are related to COVID-19 in…

A: 1. The population is the whole group on which you want to study.    Therefore, option a) is correct.

Q: 1. How many people must you have in a classroom to have a. A 50% chance of two people sharing the…

A: We need to find the number of people in a classroom to have:a. A 50% chance of two people sharing…

Q: a) Suppose the reaction temperature X (in \deg C) in a certain chemical process has a uniform…

A: Assume that the reaction temperature X (in\degC) in a certain chemical process has a uniform…

Q: Let X and Y be two random variables with joint probability mass function: p(x,y)=xy(1+y) for X=1,2,3…

A: Given that X and Y are two random variables…

Q: a dataset with a mean of 60 and a standard deviation of 8, how many observations are expected to…

A: The mean of a dataset is The standard deviation is The data is considered to follow normal…

Q: The 5 numbers are 1, 6, 9, 11.25, and 28. Draw a Box Plot for this data. (Hint: Remember how to…

A: The objective of this question is to create a box plot for the given data set and identify any…

Q: Consider the Autoregressive (AR(3)) process of order 3 satisfying the equation: x=B₁xt-1 + 0.25x1-2…

A: The AR process satisfies the equation: The autocorrelation functionAt ,  takes on the values .

Q: calculate the covariance. round ro three decimal places

A: The question is about measures.Given :

Q: 5. Consider the following circuit of 5 identical relays. The probability that any relay works is .8…

A: 5) Given circuit of 5 identical relays are,The probability that any relay works is .8 and the…

Q: If a research study in biomedical field found a moderate negative and statistically significant…

A: The correlation helps in understanding the relationship between the 2 variables.

Q: The average amount of money spent for lunch per person in the college cafeteria is $6.89 and the…

A: The objective of the question is to understand the distribution of the lunch cost for a single…

Q: The following data gives the distribution of scores of 10 students in mathematics and statistics in…

A: The values of the variables, scores in mathematics (x) and scores in statistics (y) are…

Q: Find the following frequency distribution: Age at the First Car Purchase (in Years). Class 16 - 19…

A: ClassFrequency16-191220-23824-271528-311232-359