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Consider the following hypothesis test:
H0: Mean <=12Ha: Mean > 12
A sample of 25 provided a sample mean of 14 and a sample standard deviation of 4.32.a. What is the value of "t" for this sample?b. For a 95% confidence level, what is the critical value of "t"?c. What do you conclude?
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
Make a point estimate and a 95% confidence interval estimate.
When assigning probabilities of two simple events, can we assume that each event is always equally likely to occur and, thus assign .5 to each event?
NCAA Football Coach Salaries: Given below are annual salaries for simple random sample of NCAA football coaches (Based on data from USA). How do mean and median change if highest salary is omitted?
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
A population of data from a paper supply company is known to have a mean weight of 55 ounces per ream and a population standard deviation of 5 ounces. The population is known to be bell shaped and symmetrical.
expectation of the statistic that was proposed by Statistician - Based on the information collected in Tasks 1-8, which of the two statistics produces values which tends to be more concentrated about the expectation of the measurement?
A company will promote two employees out of a group of six men and three women, what would you say the chances of this experiment if there is particular concern about gender equity and which concept of probability would you use to estimate these p..
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
The probability that a parolee will commit a crime while on parole is 0.68. A parole officer is in charge of 8 parolees. What is the probability that at least 7 of them will commit a crime while on parole?
I never understood the concept of the Empirical Rule and Chebyshev's Rule. Can you explain it to me and provide me with some sample problems please?
A correlation coefficient computed for n=18 and a=0.10 is r=0.692. . Using the t -test for the correlation coefficient, what are the critical values?
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