Question

Directions: Determine the population mean (?), sample mean (x?), sample size (n) and the standard deviation whether population (?) or sample (s) of the given problem. On the table below, put a check on the columns of the criteria that correspond to the given problem. 1. A student assistant administers an exam for the incoming grade 11 ABM students. Fifteen incoming grade 11 ABM students were selected randomly, and the result was as follows: mean score of 90 with standard deviation of 10. 2. A traffic enforcer believes that the number of cars passing through a certain intersection during rush hours on weekdays follows a normal distribution with an average of 800. A new highway is opened, and it is hypothesized that the number of cars passing through the intersection will decrease as a result. A sample of 15 weekdays is taken, and the mean number of cars passing through the intersection is 750 with a sample standard deviation of 42. n ? 30 n < 30 ? is known ? is unknown z-test t-test 1 2

          Directions: Determine the population mean (?), sample mean (x?), sample size (n) and the standard deviation whether population (?) or sample (s) of the given problem. On the table below, put a check on the columns of the criteria that correspond to the given problem.
1. A student assistant administers an exam for the incoming grade 11 ABM students. Fifteen incoming grade 11 ABM students were selected randomly, and the result was as follows: mean score of 90 with standard deviation of 10.
2. A traffic enforcer believes that the number of cars passing through a certain intersection during rush hours on weekdays follows a normal distribution with an average of 800. A new highway is opened, and it is hypothesized that the number of cars passing through the intersection will decrease as a result. A sample of 15 weekdays is taken, and the mean number of cars passing through the intersection is 750 with a sample standard deviation of 42.
n ? 30
n < 30
? is known
? is unknown
z-test
t-test
1
2

Directions: Determine the population mean (?), sample mean (x?), sample size (n) and the standard deviation whether population (?) or sample (s) of the given problem. On the table below, put a check on the columns of the criteria that correspond to the given problem.
1. A student assistant administers an exam for the incoming grade 11 ABM students. Fifteen incoming grade 11 ABM students were selected randomly, and the result was as follows: mean score of 90 with standard deviation of 10.
2. A traffic enforcer believes that the number of cars passing through a certain intersection during rush hours on weekdays follows a normal distribution with an average of 800. A new highway is opened, and it is hypothesized that the number of cars passing through the intersection will decrease as a result. A sample of 15 weekdays is taken, and the mean number of cars passing through the intersection is 750 with a sample standard deviation of 42.
n ? 30
n < 30
? is known
? is unknown
z-test
t-test
1
2

Added by Rocio H.

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