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Statistics-And-Probability Questions
Besides the Chi-Square test, pick a nonparametric method and summarize it in 4 sentences or less.
One study based on responses from 1018 randomly selected teenagers concluded that 41% of teenagers cite...
To better understand the fear that some adult patients experience when going to a dentist, a...
The overall U.S. prevalence rate of flu during the month of February 2016 was 9%. During...
A hospital director is told that 30% of the treated patients are uninsured. The director wants...
An obesity researcher conducted a study to assess whether there was a difference in the proportion...
It is claimed that the mean of a population equals 200. You test this claim by...
Derive the first 2 (moments around the mean) from the generating function e-µt Mx (t).
Consider the following LP Min Z = 4X1+X2 s.t. 3X1+X2=3 4X1+3X2>=6 X1+X2<=4 X1 , X2 >=...
suppose 1,600 of 2,000 registered voters sampled said they planned to vote for the republican candidate...
What characters will you allow customers to use in their passwords? What is the minimum number...
You wish to test the following claim ( H a ) at a significance level of...
It is known that the mean weight of all items sent through LSUHSC's campus mail system...
The distribution of scores on a recent test closely followed a Normal Distribution with a mean...
P(0<Z<2.4)
If n=41n=41, ¯x=44.4x¯=44.4, and s=7.4s=7.4, find the margin of error at a 99% confidence level Give...
A survey was taken of randomly selected Americans, age 65 and older, which found that 413...
Suppose that income X of a randomly selected Illinois adult is a normal random variable. From...
Players A, B, and C toss a pair of fair dice in order (i,e., A, then...
Human Resources department at a manufacturing company is concerned about unauthorized absences of its employees. As...
State of Economy Probability Stock X Stock Y Recession 20% $400 ? Normal 60% $550...
The time required for Quick Changers to complete an oil change service on an automobile follows...
Calculate percentage cumulative frequencies for the mothers' weight data shown and draw the percentage cumulative frequency...
A researcher wishes to conduct a study on differences in protein consumption by country of origin...
1 point) The following table provides the starting players of a basketball team and their heights...
5. Let x be a random variable with the following probability distribution. x P(x) 1 0.6...
In an effort to check the quality of their cell phones, a manufacturing manager decides to...
(1 point) BlueSky Air claims that at least 80% of its flights arrive on time. A...
let X follow the probability density function f(x):=e^(-x) if x>0. For what value of k is...
Activity 3: Which procedure? For each question, determine which inference procedure is appropriate (construct confidence interval...
The following weights in kilograms were recorded for a hockey team: 73 75 76 77 78...
What price do farmers get for their watermelon crops? In the third week of July, a...
Suppose scientists were researching a fox having white fur in a large number of foxes. For...
I am interested in predicting the value of a single antique baseball cards. I think the...
Calculate r using the computation formula (6.1). X Y 64 66 40 79 30 98 71...
1. Most penguin species are not sexually dimorphic, which means they lack obvious outward body characteristics...
For normally distributed data with μ = 100, and σ = 10, what value of x...
The following table summarizes the results of a two-factor ANOVA evaluating an independent-measures experiment with 2...
5. Suppose a large shipment of compact discs contained 12% defectives. If a sample of size...
A random sample of 50 households was selected for a phone survey. Of the 50 respondents,...
An educator claims that the average salary of substitute teachers in school districts in NC earn...
The table below gives the list price and the number of bids received for five randomly...
What is the five period moving average for period 6 for the following data: Period Gallons...
you are testing a hypothesis that the mean value of blood pressure in one cohort is...
The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution...
suppose a circular disk is divided into n sectors and that you have 10 different colors...
A tele-marketing company wants to know if sales go up as they call more people per...
The Journal of Visual Impairment & Blindness (May-June 1997) published a study of the lifestyles of...
You have been asked to conduct a study related to consumer loyalty toward three different retail...
A psychologist is working with a large group of schizophrenic patients and would like to divide...
The diameters of bolts produced in a machine shop are normally distributed with a mean of...
1.The hypothesis is Ho: U>= 220 and H1: U<220. A sample of 64 observations is selected...
In a randomization test, if out of 999 random re-shuffles of data between two groups only...
13. A local store claims that it averages 483 customers per day entering the facility with...
A class survey in a large class for first-year college students asked, "About how many hours...
Consider the following time series data: Month 1 2 3 4 5 6 7 Value 24...
9) In 2013, the mayor of a certain city began a mayor's court designed to hear...
Kennebunkport, Maine, is a popular tourist town, but businesses suffer during the winter months, especially January....
A person's blood glucose level and diabetes are closely related. Let x be a random variable...
Innis Investments manages funds for a number of companies and wealthy clients. The investment strategy is...
8) The active ingredient in antiseptic liquid bandages is 8-hydroxyquinoline (8h). This chemical can be harmful...
5. The price of coffee has been steadily declining since October 2012. The International Coffee Organization...
A Western student named Rocky Monster has gained a number of research skills during his years...
7) The Carpet Corner in Gladstone, Missouri, offers a variety of carpets, wood flooring, and tiles....
A cattle breeder has 100 black cows of breed X, 50 brown cows of breed Y...
1. Suppose a manager wants to predict Sales from Number of Sales people working. Sales (in...
what are the advantages of using a confidence interval
Let f(x) = e^-2(2^x)/x! for x= 1,2,3,... and 0 otherwise. Show that f(x) is a pdf....
A study was done to determine the effect of living near cell phone towers on brain...
A cellphone provider has the business objective of wanting to determine the proportion of subscribers who...
You may need to use the appropriate technology to answer this question. Consider the following hypothesis...
In an effort to promote a new product, a marketing firm asks participants to rate the...
Digital cameras have taken over the majority of the point-and-shoot camera market. One of the important...
An instructor for a class collected data from one of her class to investigate the relationship...
The following data are the distances between 20 retail stores and a large distribution center. The...
Assume that a population of size 5 specifies that all possible samples of size "3" are...
Ten problems have been solved by method A and twelve problems of same kind have been...
In proof testing of circuit boards, the probability that a particular diode will fail is 0.015....
The distribution of weights of United States pennies is approximately normal with a mean (m) of...
Find a simple expression for P(A|B) under the following conditions: (a) A and B are disjoint....
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