1) The t-distribution converges to the standard normal distribution as degrees of freedom increase. True or False?
2) What do we call the hypothesis that is accepted by default unless the contradictory evidence in overwhelmingly convincing?
#1.
True
#2.
Null hypothesis
It is accepted by default unless the contradictory evidence in overwhelmingly convincing
1) The t-distribution converges to the standard normal distribution as degrees of freedom increase. True or...
True/false With infinite degrees of freedom the t distribution is identical in shape to the unit normal z distribution.
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The difference between the T distribution and the standard normal (z) distribution decreases as the degrees of freedom increase. True False When estimating the number of responses to be collected in order to achieve a desired margin of error on a proportion, what value should be used for the population proportion if no estimate is available? Enter your answer as a decimal to 2 decimal places. A population is believed to have a standard deviation of 23.1. An analyst wants...
In this problem, assume that the distribution of differences approximately normal Notes For degrees of freedom dl. not in the Student's situations, this choice of I may increase the value by a mall amount and therefore produce a slightly more conservative answer table, use the desest of that is smaller. In some The artifact frequency for an excavation of a kiva in Bandelier National Monument gave the following information Stratum Flaked Stone Tools Nonfiaked Stone Tools Does this information indicate...
The t-distribution and the standard normal distribution diverge(become very different) as the degree of freedom become very large( that is,approach infinity). true or false
Below are the graphs of a standard Normal distribution and a t-distribution with 3 degrees of freedom 1. (a) Indicated which graph is which and explain how you know. Dotted graph- standord Normet Solid graph +distmbuton with d3 4 3 -2 1 2 4 (b) On the same figure sketch a graph of a t-distribution with 1 degree of freedom.
1. For a T distribution with 10 degrees of freedom, what is the probability P(T < -1.372)? 1. We consider a sample of 11 being used in a hypothesis test. In a two-sided hypothesis test where we reject if the value of |To| > Ta/2 is -2.05. Do you reject the null hypothesis in this case (explain why)? What is the p- value in this case (you may use a range for the p-value)? 2. This time a sample size...
true or false? the total area under a t-distribution curve with 5 degrees of freedom is 1
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Please explain, I dont really understand 7. True or False? The central limit theorem tells us that as the sample size increases, the sampling distribution of the sample mean approaches an approximately normal distribution REGARDLESS OF the original population data distribution. 8. True or False? Student t-distribution, regardless its degree of freedom, has heavier tails than the standard normal distribution. 9. In a hypothesis test we always assume the hypothesis unless we have sufficient evidence for the hypothesis 10. In...