A price of bread in the market is a normal random variable X with the unknown expected value m and standard deviation o. There is the data out of 10 stores: 0,79 0,95 0,71 0,85 0,71 0,95 0,89 0,75 0,75 0,79. Calculate the empirical expected value and the empirical unadjusted standard deviation. Form and check the hypothesis about the mean price of bread (e.g. the zero hypothesis Ho: m=mo ). Let the significance level be equal 0,05.