ALL ABOUT STATS

2. A random sample of 10 movie theaters showed that the mean price of a movie ticket was PHP183.00 with a standard deviation of PHP20.00. What is the length of the 95% confidence interval for mean price of a movie ticket?1. A process has been demloped that can transform ordinary iron into a kind of smer iron called metallic glass. Metallic glass is three to four times stronger titan the toughest steel alloys. To estimate the mean temperature. p. at which a particular type of metallic glass becomes brittle. 2t} pieces of this metallic glass were randomly sampled from a recent production run. Each piece was subjected to higher and higher temperatures until it became brittle. The temperature at which brittleness first appeared was recorded for each piece in the sample. The following results were obtained: 1': = 'iF, s 2 15F. Calculate the length of the 95% confidence interval for the mean temperature at which a particular type of metallic glass becomes brittle