Question

1. A higher p-value corresponds to higher confidence in the stated result. True or False? 2....

1. A higher p-value corresponds to higher confidence in the stated result. True or False?

2. The function "errorbar()" is used to calculate standard errors of means (which are often used in plots with error bars). True or False?

3. For a given data set, the 80% confidence interval for the mean is going to be larger than the 90% confidence interval for the mean. True or False?

4. For a given data set, the 90% confidence interval for the mean based on a large sample is going to be larger than the 90% confidence interval for the mean based on a small sample. True or False?

Math   Statistics-And-Probability   
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Answer #1

1) FALSE, basically p value alone shows that the result is significant or not at certain level.

2) FALSE, the errorbar function is used to show the confidence level of data or the deviation along a curve.

3) True, since at 80% confidence level z/t score is less than as at 90%confidence level. and we have C.I=estimate+-(z/t score) *s.e. it will be larger for small z/t.

4) False since length of C.I = 2*t/z* S.D/sqrt(n), therefore for large n length of C.I will be small.

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