Statistics Homework Answers & Questions

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146 results
  • Answered Statistics MyStatLab
    Test whether p1 > p2. The sample data are X11 = 118, n1 = 242, x2 = 133, n2 =306 (A) Determine the Test statistic: Z0 = (B) Determine the P-value
  • Waiting for answer statistics chapter 4 condition...
    statistics chapter 4 conditional probability
  • Waiting for answer The freshman 15 refers to the...
    The freshman 15 refers to the urban legend that students gain an average of 15 pounds during their freshman year of college. The weights of 100 freshmen at a certain University were observed in August and then re-examined in May. The claim that the mean difference is equal to 15 pounds is tested at...
  • Waiting for answer The probability that a person...
    The probability that a person in the United States has type B​+ blood is 99​%. FiveFive unrelated people in the United States are selected at random
  • Waiting for answer Please kind i get a profession...
    Please kind i get a professional to help me with my homework questions on Statistic. Homework 5 ---------- Do the following problems from the textbook (see notes below!): 6.2, 6.5(a,b,d), 6.6(a,b), 6.7(a), 6.8, 6.18(c,e), 6.19(a,c), 6.22(a, c), 6.23(a), 3.3(c,d), 3.6(b,c), 3.16(a, c, d, e, f). NOTE:...
  • Waiting for answer Please kind i get a professio...
    Please kind i get a professional to help me with my homework questions on Statistic. Homework 5 ---------- Do the following problems from the textbook (see notes below!): 6.2, 6.5(a,b,d), 6.6(a,b), 6.7(a), 6.8, 6.18(c,e), 6.19(a,c), 6.22(a, c), 6.23(a), 3.3(c,d), 3.6(b,c), 3.16(a, c,...
  • Answered Suppose a bag of 50 marbles, o...
    Suppose a bag of 50 marbles, of which, 20 are blue, 16 are white and 14 are pink. If two marbles are selected at random, complete the following: a. Sketch a tree diagram illustrating the probabilities of all possible combinations b. what is the probability that both marbles are white? c. w...
  • Waiting for answer From the random sample of 100...
    From the random sample of 100 cones of vanilla ice-cream, it is found that 6 of them have to be disposed because of air bubbles caused by non-uniform flow of ice-cream from the dispensing machine. The disposed ice-cream cones are considered defective. Perform an estimate on the proportion of defect...
  • Answered Summer reading programs are ve...
    Summer reading programs are very popular with children. At the Citizens Library, Team Ramona read an average of 23.2 books with a standard deviation of 6.1. There were 21 members on this team. Team Beezus read an average of 26.1 books with a standard deviation of 2.3. There were 23 members on this t...
  • Answered d2 11c q 3
    d2 11c q 3
  • Answered Critical Thinking 6(a)
    Option 1: Springdale Shopping Survey Instructions The major shopping areas in the community of Springdale include Springdale Mall, West Mall, and the downtown area on Main Street. A telephone survey has been conducted to identify strengths and weaknesses of these areas and to find out how they...
  • Answered Statistics Help
    Statistics Help 1. In a normal distribution, 75% of the items are under 100 and 20% are over 200. Find the mean and standard deviation of the distribution. 2. Use the tabulated values of the standard normal variable (z table) in order to figure out values of z1 and z2 as shown in the...
  • Answered Discussion Board
    One can calculate the 95% confidence interval for the mean with the population standard deviation known. This will give us an upper and a lower confidence limit. What happens if we decide to calculate the 99% confidence interval? Describe how the increase in the confidence level has changed the widt...
  • Answered A GUIDE TO HOW TO WRITE EFFECT...
    Content of the Thesis/Research project/ Dissertation Preliminaries Chapter One: Introduction of the Study Chapter Two: Literature Review Chapter Three: Research Methodology Chapter Four: Analysis and Discussion Chapter Fiv...
  • Answered The mean human gestation perio...
    The mean human gestation period is 266 days. Actual time to delivery is approximately normally distributed with a standard deviation of about 12 days. Marcelle goes into labor and gives birth to a child 245 days after conception. What percentage of women give birth (a) at the same point in pregnancy...
  • Answered QMB Harvard Final Exam Final A...
    1. The median is often a better representative of the central value of a data set when the data set: Source Top of Form Is bimodal. Has a high standard deviation. Is highly skewed. Has no outliers. 2. The data in the Excel spreadsheet linked below pro...
  • Answered Critical Thinking 6
    Option 1: Springdale Shopping Survey Instructions The major shopping areas in the community of Springdale include Springdale Mall, West Mall, and the downtown area on Main Street. A telephone survey has been conducted to identify strengths and weaknesses of these areas and to find out how they...
  • Answered In the 1960s, data were collec...
    In the 1960s, data were collected on the weights of people to determine the safe passenger capacity of aircraft. Using a random sample the mean weight was found to be 166.3 lbs. In recent decades, the mean weight of the population has increased considerably, so we need to update our estimate of t...
  • Answered A golf ball manufacturer desir...
    A golf ball manufacturer desires to compare the distance traveled by golf balls using four unique designs. Fifteen balls were manufactured and each was brought to the local golf course for testing by the local pro. The order of the golf balls hit by the professional was randomized so the pro did not...
  • Answered The percentage of people in a...
    The percentage of people in a population with a certain ailment (Ailment A) is 15%. A. If you select a sample of 10 people from this population, what is the probability at least half of them have Ailment A? B. What is the probability at most 3 of them would have this ailment? C. If you sele...
  • Waiting for answer The cost of 14 models of digit...
    The cost of 14 models of digitals cameras at a camera specialty store during 2014 was as follows: 340 450 450 280 220 340 290 370 400 310 340 430 270 380 1. Compute mean, median, mode, first and third quartile. 2. Compute the variance, standard deviation, range, interquartile range, coefficient o...
  • Answered Confidence interval for propor...
    A survey showed that 80% of the 1600 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults believing in global warming.
  • Answered The following data represent g...
    The following data represent glucose blood levels(mg/100 ml) after a 12 hour fast for a random sample of 70 women. Use six classes and determine the class width. (Enter the number only. Do not include any other text.) 45, 66, 83, 71, 76, 64, 59, 59 76, 82, 80, 81, 85, 77, 82, 90 87, 72, 79, 69,...
  • Waiting for answer An extended warranty is a prol...
    An extended warranty is a prolonged warranty offered to consumers by the warranty administrator, the retailer, or the manufacturer. A recent report in The New York Times (November 23, 2009) suggests that 20.4% of laptops fail over three years. Roberto D'Angelo is interested in an extended warranty f...
  • Answered State STAT 200 Multiple Choice...
    1.The data summary used to calculate the p-value in order to decide between the null hypothesis and the alternative hypothesis is called a A) test statistic. B) statistically significant result. C) significance level. D) p-value. 2. Determine if the statement is a typical null hypothesis (H...
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