Statistics Homework Answers & Questions

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  • Answered The Act test had a mean composite score of 18. And a standar...

    The Act test had a mean composite score of 18. And a standard deviation of 6. Assume the scores are normally distributed.  Find the probability that a student had a score between 15 and 19.  SHOW WORK PLEASE

  • Answered The act test had a mean composite score of 18 and

    The act test had a mean composite score of 18 and a standard deviation of 6. Assume the scores are normally distributed. Find the probability that a student had a score higher then 20

  • Answered Probability

    a die is rolled. what is the probability that the outcome is at least 4 given that it is even?

  • Answered sample servey

    what is sample servey?

  • Answered Statistics help

    A certain medical test has the following reliability: if a person has cooties the test will show positive with probability 0.95. If a person does not have cooties, the test will show negative with probability 0.6. Overall, 10% of the population has cooties. Give your answers as percentages with two...

  • Answered statistics

    Ten items out of a set of 80 are defectives. What is the probability that 3 out of 4 chosen items will not be defective

  • Answered POPCORN

    According to popcorn.org, the mean consumption of popcorn annually by Americans is 54 quarts. The marketing division of popcorn.org unleashes an aggressive campaign designed to get Americans to consume even more popcorn. (a)   Suppose, in fact, that the mean annual consumption of popcorn after the m...

  • Answered statistics-probability

    A pair of dice is rolled.What is the probability of rolling a combined value of 9 or less?

  • Answered Statistics I : Need Help.

    What is the Midpoint and Boundaries for 7.13-11.38?

  • Waiting for answer Statistical bioinformatics

    Question 1 (10pts) a) What is probability of observing 61325 when rolling fair dice? Probabilities for fair dice : P(1)=P(2)=P(3)=P(4)=P(5)=P(6)=1/6 b) What is probability of observing 61325 when rolling loaded dice? Probabilities for fair dice : P(1)=P(2)=P(3)=P(4)=P(5)= 0.1 and P(6)=0.5 c) What is...

  • Waiting for answer Statistical bioinformatics

    Question 1 (10pts) a) What is probability of observing 61325 when rolling fair dice? Probabilities for fair dice : P(1)=P(2)=P(3)=P(4)=P(5)=P(6)=1/6 b) What is probability of observing 61325 when rolling loaded dice? Probabilities for fair dice : P(1)=P(2)=P(3)=P(4)=P(5)= 0.1 and P(6)=0.5 c) What is...

  • Answered Statistics Course Project Part 2

    I ALSO ATTACHED A FILE THAT HAS TO BE LOOKED AT FIRST: TOPIC IS HOW MANAGERS EVALUATE EMPLOYEES Collect, Organize and Summarize the Data Collect, organize, and summarize the data Provide the raw data organized in a table or chart. Describe your data set. Discuss your sampling technique and how you c...

  • Answered Statistics Homework

    The homework sheet is attached. Also I dont know how to leave a review....if you can tell me how so I can start doing that. Thanks

  • Answered Spearman's rank correlation coefficient

    THIS IS AIMED AT ENABLING A STUDENT TO CALCULATE THE SPEARMAN'S RANK CORRELATION COEFFICIENT FROM GIVEN DATA AND TO RELATE IT TO BUSINESS AS AN AREA OF APPLICATION. CASE 1: RANKING NON-REPEATING DATA CASE 2: RANKING REPEATING DATA CASE 3: LINK BETWEEN SPEARMAN RANK AND BUSINESS PROFITS 1.      (a) W...

  • Waiting for answer What do the minimum, first quartile, median, third quartile,...

    They each contribute to the box plot in different ways (see below). A box and whisker plot is a method of displaying data and its distribution. The minimum is the lowest value in th...

  • Waiting for answer How do you find the outlier in the data: 32, 40, 34, 3 l, 20...

    The outlier in this data is 20. To find the outlier, you must find the number that is the most different from the others. In this case, 20 only appears once, and it is farther from t...

  • Waiting for answer What is the empirical rule and how does it differ from Cheby...

    The Empirical rule can be used for bell shaped data ONLY. Chebyshev's inequality on the other hand can be used on any data set to find the percentile of a given value or data point....

  • Waiting for answer 1.What is x if the mean of the numbers 4,5,x,8,9 and 3 is 6?...

    1) ##x = 7##. 2) Median = ##7.5## Explanation: Recall that the arithmetic mean ##bar x## of a data set may be determined as follows: ##bar x = sum_(i=1)^n x_i/n##. where n = number of numbers you adding up and ##x##= the number Thus, for our initial data set: ##6 = (...

  • Waiting for answer What is the difference between categorical (qualitative) dat...

    Actually there are three main types of data. Qualitative or categorical data have no logical order, and can't be translated into a numerical value. Eye colour is an example, because 'brown' is not higher or lower than 'blue'. Quantitative or numerical data are numbers, and that way they 'impose'...

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