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How do you calculate a 95% confidence interval for statistics using a paired t test? how do you use a t table and how do you calculate a p value?
Statistics and Probability, Statistics
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A clothing quality director determines the accuracy of NFL Logos on t-shirts. 9% of the shirts made that day are defective. The shirts are sold in packages of 10. Find the probability that in one randomly selected packag ...
A researcher reports that the size of an effect in Population A is d = 0.10 and the effect size in Population B is d = 0.34. Which population is associated with greater power to detect an effect? A) Population A B) Popul ...
IQ test scores of students are normally distributed with mean μ=100 and standard deviation σ=10. What is the 33th percentile of the IQ scores? For a randomly chosen student, what is the probability that his or her IQ sco ...
Staples has six special drafting pencils for sale, two of which are defective. A student buys two of these six drafting pencils, selected at random. Let the random variable X be the number of defective pencils. Construct ...
Vang Corp.'s stock price at the end of last year was $33.50 and its earnings per share for the year were $2.30. What was its P/E ratio?
Interested in learning more about its fans, the marketing office of the Arena Football League (AFL) conducted a survey at one of its games. The survey had 952 respondents, 679 males and 273 females. Out of the 952 total ...
A study of cancer was conducted among 10,000 men in the United States who were 40-75 years of age. Every two years questionnaires are sent to these individuals, and newly diagnosed cases of various cancers were reported. ...
A system consists of five independent components in parallel. The system will work if at least one of the five components works. Let Ci represent the event that component i works, i=1,...,5. P(Ci)=0.97 for all i. What is ...
The P-value for a two-sided test of the null hypothesis H0: μ = 50 is 0.035. Does the 95% confidence interval include the value 50? Why? Does the 99% confidence interval include the value 50? Why?
1) If there are 150 values in a data set, how many classes should be created for a frequency histogram? A. 5 B. 6 C. 7 D. 8 E. 9 2) . If x is a binomial random variable where n = 100 and p = 0.2, find the probability th ...
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