Suppose seven measurements of the temperature in a controlled environment yield the following data (in degrees celsius). 1 -0.9-0.8 0.6 0.2 1.2 0.6 assume that the different measurements are due only to measurement error, and that measurement error is normally distributed. the goal is to set up an approximate 90% confidence interval for the correct measurement. in each part, answer correct to three decimal places. calculator recommended. estimate the correct measurement. degrees celsius attach a give-or-take value to the estimate (that is, estimate the standard error). degrees celsius there are 7 measurements. distribution with measurements follow a normal distribution e degrees of freedom. so, for 90% confidence, we include if they vary only due to chance measurement error then the standardized average of 7 measurements follows a student . standard error(s) on each side of our estimate. an approximate 90% confidence interval for the correct measurement is