Friday
December 13, 2013

# Posts by tracy

Total # Posts: 705

Math question
How do you find the p-value, on a problem like below. The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a dependent sampling plan. The data collected are summarized below, where d is the amount of corrosion on the coated portion subtr...

Statistics check
what do you mean with stat oldest L1, etc. Have a question I have a TI-83 Plus calculator, is there a way of putting in the information to get the p value or do you still have to look at a chart. When I read the instructions on it, it mentioned finding the z value to get to th...

statistics
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.) (a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4 = ì...

Statistics
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give your answer correct to two decimal places.) Sample n x G 386 327 H 414 321

math
But how do you get the p-value, I have worked it out by hand and also put into calculator and it comes up wrong. 0.0017 was the last answer I got. and 0.9991 before that. I have several questions like this asking for p-value so if you could work one out and I could use as an e...

statistics help
Complete the hypothesis test with alternative hypothesis ƒÊd ‚ 0 based on the paired data that follows and d = O - Y. Use ƒ¿ = 0.01. Assume normality. Oldest 188 174 192 196 65 Youngest 186 168 199 199 69 (a) Find t. (Give your answer correct ...

statistics
I have worked it out and found the t value as 3.80 and that came out right but the p value is not coming out right.

statistics check
Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) 5.35 was my answer . (c) Calculate sx and sy. (Give your answers correct to three decima...

statistics
So this is what I came up with on (b) 6.93 and (c) 6.48 and those were wrong. I think I am missing them at the beginning when k-1=?-1 and n-k=?-?. Which graph or table are you getting these from? I figure out the other one to come up with the answers but I must of missed the f...

statistics
this is the answers that I got and they were wrong. f>equal to 3.20 for a part and b part I got f>equal to 3.41 But they both are wrong do not thing I am sitting them up right, any help?

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