Navigating Normal Probability with the TI-84

The video tutorial explains how to use the TI-84 calculator to find normal probabilities. It covers calculating the probability of a time range for beating Mega Man X, using the normal CDF function. The tutorial demonstrates finding probabilities for times between two values, less than a value, and greater than a value, emphasizing the importance of knowing the mean, standard deviation, and bounds.

What type of distribution is required to use the normal CDF function on the TI-84 calculator?

• Poisson distribution

• Binomial distribution

• Uniform distribution

• Normal distribution

What is the mean time to beat Megaman X in the given example?

• 320 minutes

• 300 minutes

• 245 minutes

• 200 minutes

What is the standard deviation of the time to beat Megaman X in the given example?

• 90 minutes

• 30 minutes

• 45 minutes

• 60 minutes

Which function on the TI-84 calculator is used to find the probability that a value falls within a certain range in a normal distribution?

• invNorm

• binomCDF

• normalCDF

• normalPDF

What is the lower bound when calculating the probability that the time to beat Megaman X is between 200 and 245 minutes?

• 300

• 200

• 245

• 45

What is the upper bound when calculating the probability that the time to beat Megaman X is less than 200 minutes?

• 200

• 245

• 300

• Negative infinity

How is negative infinity represented on the TI-84 calculator?

• -1E99

• -1E9

• -1E19

• -1E999

What is the probability that the time to beat Megaman X is less than 200 minutes?

• 0.0131

• 0.0977

• 0.328

• 0.5

What is the lower bound when calculating the probability that the time to beat Megaman X is more than 320 minutes?

• 320

• 200

• 245

• 300

What four pieces of information are needed to calculate probabilities using the normal CDF function on the TI-84 calculator?

• Mean, standard deviation, variance, range

• Lower bound, upper bound, variance, standard deviation

• Lower bound, upper bound, mean, standard deviation

• Mean, median, mode, range