1. Express theconfidence interval (35%,42%) in the form of p±ME.
% ± %
2.
You are a researcherstudying the lifespan of a certain species of bacteria. Apreliminary sample of 35 bacteria reveals a sample mean of x=70hours with a standard deviation of s=4.2 hours. You would like toestimate the mean lifespan for this species of bacteria to within amargin of error of 0.45 hours at a 98% level of confidence.
What sample sizeshould you gather to achieve a 0.45 hour margin of error? Roundyour answer up to the nearest whole number.
n = bacteria
If you can kindlyanswer both questions please I would really appreciate it. I haveposted these questions several times and keep getting the wronganswers. Thank you so much
