The following is the distribution of the readings obtained with a Geiger counter of the number of particles emitted by a radioactive substance in 100 successive 40-second intervals: Number of 5-9...

Extracted text: The following is the distribution of the readings obtained with a Geiger counter of the number of particles emitted by a radioactive substance in 100 successive 40-second intervals: Number of 5-9 10-14 15-19 20-24 25-29 30-34 35-39 particles frequencies 1 10 37 36 13 Find the sample mean and sample standard deviation a. Find the probabilities that a random variable having a normal distribution with population mean and standard deviation as in (a) above will take on values in the table above b. Find the expected normal curve frequencies for the various classes Test at 0.05 significance level, whether the data may be looked d. C.