Understanding Normal Distribution in Newborn Weights

The video tutorial explains how to calculate probabilities for newborn baby weights using normal distribution. It covers the use of a TI-84 calculator to find probabilities for weights between 5 and 7 pounds, less than 6 pounds, more than 7.5 pounds, and between 6 and 8 pounds. The tutorial emphasizes the importance of understanding the mean and standard deviation in normal distribution and demonstrates how to use the calculator's normal cumulative density function to find these probabilities.

What is the mean weight of newborn babies in the given distribution?

• 5.5 pounds

• 6.7 pounds

• 8.1 pounds

• 7.5 pounds

Which tool is used to calculate the probability of weights between 5 and 7 pounds?

• Empirical rule

• TI-84 calculator

• Graphical method

• Z-score table

What is the probability that a newborn weighs between 5 and 7 pounds?

• 0.2335

• 0.5464

• 0.2623

• 0.6191

How many babies out of 500 are expected to weigh between 5 and 7 pounds?

• 131

• 273

• 310

• 117

What is the probability that a newborn weighs less than 6 pounds?

• 0.6191

• 0.5464

• 0.2623

• 0.2335

How many babies out of 500 are expected to weigh less than 6 pounds?

• 273

• 310

• 117

• 131

What is the probability that a newborn weighs more than 7.5 pounds?

• 0.6191

• 0.5464

• 0.2623

• 0.2335

How many babies out of 500 are expected to weigh more than 7.5 pounds?

• 131

• 117

• 273

• 310

What is the probability that a newborn weighs between 6 and 8 pounds?

• 0.6191

• 0.5464

• 0.2335

• 0.2623

How many babies out of 500 are expected to weigh between 6 and 8 pounds?

• 310

• 117

• 131

• 273