95% confidence interval

  1. J

    Best way to say something about the accuracy of a measurement

    Hi, I'm an engineering student and encountered a problem to which I did not find a solution yet, and wondered if someone could give me the benefit of their expert opinion. I'm going to perform an experiment in which I'll cook an egg using standing electromagnetic waves, only for a short period...
  2. E

    Overlapping confidence intervals and p values

    Hi, I've been given the mean and 95% confidence interval (CI) of two independent groups and asked if they were satistically significantly different or not? I know that if the CIs of the two groups don't overlap at all, then they can be considered as significantly different. However if the CI do...
  3. Q

    95% CI for rare incidence rate increasing in time.

    I have a plot of 10 incidence rates across time (see picture). I want to calculate the 95% confidence interval for each rate. It would be easiest to just do a normal distribution calculation, but I'm concerned this is not applicable here. For one, they are rare events. I thought to do a poisson...
  4. M

    95% confidence intervals and null hypothesis

    if a 95% confidence interval for a sample mean is (-1.23; 2.68). what would be tthe inferential decision made from a null hypothesis test when (i) Ho: mean(mu) + 2.0, and (ii) Ho: mean(mu) = -1.0 ? support each inference with a brief explanation for why you would make that decision. and...