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- q2 Don't take from any site plzClaim: Most adults would not erase all of their personal information online if they could. A software firm survey of 633randomly selected adults showed that 36% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information.Suppose that for a certain data, the Z score of the median = + 2.0, the distribution of the data is: a. Skewed to the right b. Skewed to the left c. Can not be determined d. Symmetric I need exeplain how i can solve this quistions type.
- Suppose that you randomly selected 25 adults. If 19% of the population smoke,a) Using the Range Rule of Thumb, what is the minimum number of usual smokers we can expect to get out of 25 adults?Note: Round all answers to two decimal places.b) Using the Range Rule of Thumb, what is the maximum number of usual smokers we can expect to get out of 25 adults?Note: Round all answers to two decimal places.c) Would it be unusual to randomly select 25 smokers and get 23 smokers? Explain! Yes, since 23 is not between the maximum and minimum usual values. No, since 23 is between the maximum and minimum usual values. d) If we randomly selected 25 adults and found 23 smokers in the group, what could we conclude? We can conclude that 19% of smokers is probably incorrect, and that the percentage of smokers is greater than 19%. We cannot conclude that the 19% of smokers is probably incorrectthomas is a shift manager at a local fast food place and is responsible quality management thomas wants ensure that each of the frozen hamburger patties that get delivered by the supplier weights four ounces on average assume that standerd devitation of the weight of hamburger patties is known to be 0.1 ounces thomas tells one of his employes that as a shipment comes in select 20 patties at random and the average weight for the 20 patties if the average weight is less than 3.95 ounces reject the shipment what is the smallest significate level assocaited with decision ruleFor example, for student ID s1243657, the 4th digital of s1243657 is “3”, therefore variable “A” is “Use interactive activities”; the 5th digital of s1243657 is “6”, therefore variable “B” is “Give a lot of assignments”; the 6th digital of s1243657 is “5”, therefore variable “C” is “Good communication skills. Take student id S12042516 as an example. With the data collected, Dr Tian ran a test to see if there were significant relationships between A, B, C and satisfaction toward e-learning. i ) Suggest the test that should be used and explain your reason. State the independent and dependent variables, underlying null and alternative hypotheses.
- A consumer is given the chance to buy a baseball card for $1, but hedeclines the trade. If the consumer is now given the baseball card, willhe be willing to sell it for $1? Standard consumer theory suggests yes, butbehavioral economists have found that “ownership” tends to increase thevalue of goods to consumers. That is, the consumer may hold out for someamount more than $1 (for example, $1.20) when selling the card, eventhough he was willing to pay only some amount less than $1 (for example,$0.88) when buying it. Behavioral economists call this phenomenon the“endowment effect.” John List investigated the endowment effect in a randomized experiment involving sports memorabilia traders at a sports-card show. Traders were randomly given one of two sports collectibles, say good A or good B, that had approximately equal market value.1 Those receiving good A were then given the option of trading good A for good B with the experimenter; those receiving good B were given the option of…Southwestern Electronics has developed a new calculator that performs a series of functionsnot yet performed by any other calculator. The marketing department is planning todemonstrate this calculator to a group of potential customers, but it is worried about someinitial problems, which have resulted in 4 percent of the new calculators developingmathematical inconsistencies. The marketing VP is planning on randomly selecting a groupof calculators for this demonstration and is worried about the chances of selecting acalculator that could start malfunctioning. He believes that whether or not a calculatormalfunctions is a Bernoulli process, and he is convinced that the probability of a malfunctionis really about 0.04. Assuming that the VP selects exactly 50 calculators to use in thedemonstration, and using the Poisson distribution as an approximation of the binomial whatis the chance of getting at least two calculators malfunctioning?Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 688 randomly selected adults showed that 37% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information.
- A pediatrician keeps some basic health information about all his patients. Here are four of the variables that he keeps track of for each patient: • Body temperature (in degrees Fahrenheit, at time of doctor visit) • Eye Color (blue, brown, or green) • Height (in inches, at time of their last doctor visit) • Birth Order (whether they were born 1st , 2 nd , 3 rd, etc., among their sibling) Of these four variables, one is Nominal, one is Ordinal, one is Interval, and one is Ratio. Question 1. Match each variable with its scale of measurement. Of the four variables, state which one is Nominal, which is Ordinal, which is Interval, and which is Ratio. • Body Temp – ? • Eye Color -- ? • Height -- ? • Birth Order -- ?Suppose that in a research it was discovered that those who majored in math, engineering, or computer science scored higher on tests measuring "problem-solving" ability at the end of 4 years of college than did those students who did not major in these fields. A. What is (are) the independent variable(s)?At a science fair, 4 different groups of students from a local school are showcasing their projects. The groups arrive with their advisors and each group has a different number of students (40, 33, 25, and 50, respectively). A participant is chosen randomly from the entire pool of students. Let’s use the variable X to represent the number of students in the group that the selected participant belongs to. Meanwhile, the event organizers decide to acknowledge the hard work of one of the advisors by ”randomly selecting” one of them for special recognition. Let’s use the variable Y to represent the number of students who came with the chosen advisor. (a) Before doing any computations, which of E(X) or E(Y) do you think is larger? Or are they the same? Why? (b) Compute E(X) and E(Y). Comment.
