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Use the binomial distribution with n = 20, π = .5 to compare accuracy of the normal approximation to the binomial.
a. Compute the exact probabilities and corresponding normal approximations for y = 5.
b. The normal approximation can be improved slightly by taking P(y = 4.5). Why should this help? Compare your results.
c. Compute the exact probabilities and corresponding normal approximations with the continuity correction for P(8 y 14).
The University of Ghana in Legon, Ghana, was established in 1948 as an affiliate college of the University of London called University College of the Gold Coast. In 1961 the university was reorganized by an act of Parliament into what it is today:..
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
a student in the concrete lab places 6 low strength concrete test cylinders 3500 psi with a batch of 9 high strength
A college's data about incoming freshmen indicates that the mean of their high school GPA was 3.4, with a standard deviation of 0.35. Let X=the GPA of an incoming freshman. The students are randomly assigned to writing groups of size 49.
According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes.
Assess the model fit for the multiple linear regression model using appropriate statistics and graphics.
Combine the following observations with the above data: 34, 46, 92, 51, 65, 76, 53, 99, 40, 46. Does the combined data set look normal?
In baseball, the term "batting average" is employed as one way to measure a player's offensive performance. If we were to consider the idea of batting average in statistical sense
The cost of one serving of peanut butter ( in cents) for a random sample of 19 jars of peanut butter was found to be:
in a recent survey ten percent of the homes in montana were found to own a miley cyrus action figure. in a sample of
Scores on certain nationwide college entrance examination follow normal distribution with mean of 500 and a standard deviation of 100. Determine the probability that student will score?
since changing this statistics course to a new format i would like to be able to detect an increase of one letter grade
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