With α=0.01 and 12 degrees of freedom, the t-statistic (t-score) must exceed ____ to be considered statistically significant.
2.681 |
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1.812 |
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1.645 |
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Not enough information |
With α=0.01 and 12 degrees of freedom, the t-statistic (t-score) must exceed ____ to be considered...
For each of the following t values (a-d), indicate whether the t statistic is statistically significant for a two-tailed test, at the specified alphas: t = 2.90, df = 25, α = 0.01 t = 2.20, df = 25, α = 0.05 t = 5.52, df = 10, α = 0.01 t = 2.02, df = 20, α = 0.05 CAUTION: GET ON THE RIGHT PAGE …..Make sure you use the correct table: pages 413-415 (the difference is the α:...
Consider an upper tail test at the α =0.01 significance level with the test statistic =2.638 and degrees of freedom df=94 a) use the critical value approach to decide weather to reject ho b) consider the p-value approach to decide weather to reject ho
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smalier. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. At five weather stations on Trail Ridge Road in Rocky Mountain National Park, the peak wind gusts (in miles per hour) for January and April are...
Please answer a and b
years. a) How many degrees of freedom does the t-statistic have? b) How many degrees of freedom would the t-statistic have if the sample size had been 225? A survey of 25 randomly selected customers found the ages shown (in years). The mean is 33.68 years and the standard deviation is 10.5731 27 49 33 48 49 34 35 37 28 21 26 48 38 35 20 27 18 26 10 38 36 44 49...
find the TValue 14 degrees of freedom (V
Find the t-value for 14 degrees of freedom (v = 14) given a 95% confidence level. (Write the answer up to 3 decimal places) Table for required value of z Dor Area in the right tailer the /-distribution curve 3.10 .05 .025 .01 .005.001 111 3.078 6.314 12.71 31.82 63.66 318.3 11 1.363 1.796 2.201 2.718 3.106 4.025 12 1.356 1.782 2.179 2.681 3.055 3.930 14 1.345 1.761 2.145 2.625 2.977 3.787...
ply Your Knowledge 20.8 Is It Significant? The one-sample t statistic for testing from a sample of n = 25 observations has the value 1.75. (a) What are the degrees of freedom for this statistic? (b) Give the two critical values from Table C that bracket t. What are the one-sided P-values for these two entries? (c) Is the value t-1.75 significant at the 10% level? Is it significant at the 5% level? Is it significant at the 1% level?...
Let t be a t-random variable. P(t>a) 0.025 and 12 degrees of freedom. Find a. P(t < a) 0.05 and 21 degrees of freedom. Find a. P(-a < t<a) = 0.95 and 27 degrees of freedom. Find a. For 15 degrees of freedom, find P(t < 1.753) For 22 degrees of freedom, find P(-2.074 < t < 2.074). Use Excel function =t.dist to find P(t<-2.86) with df 25 Use Excel function =t.dist.rt to find P(t > 1.33) with df 29...
please find the degrees of freedom,critical values, correlation
coefficient, and test statistic as well.
Score: 0 of 1 pt 8 of 8 (6 complete) HW Score: 67.86%, 8.14 of 12 pts 9.1.35-T Assigned Media Question Help The maximum weights (in kilograms for which one repetition of a half-squat can be performed and the jump heights (in centimeters) for 12 international soccer players are given in the accompanying table. The correlation coefficient, rounded to three decimal places, is r=0.715. At a...
5. Using the Kolmogorov-Smirnov two-sample test, show that the t statistic with large degrees of freedom can be approximated by the standard normal distribution. How large should the degrees of freedom be? Hint: Do simulations on a large sample.
You are testing H0:μ=100against Ha:μ<100with degrees of freedom of 24. The t statistic is -2.15 . The P-value for the statistic falls between ____ and _____ .