1.1 Given that the life of light bulbs purchased from a hardware store follows a normal...

Transcribed Image Text:

1.1 Given that the life of light bulbs purchased from a hardware store follows a normal distribution with a mean life u = 30 months standard deviation a = 4. Determine the following probabilities: 1.1.1 The life of the bulb is between 30 and 35 months. (2) 1.1.2 The life of the bulb is greater than 21months. (2) 1.1.3 The life of the bulb is less than 40 months. (2) 1.2 Weights of product samples are 10,6,24 and 12. Determine the weight variance. (3) 1.3 Customer support agents monthly customer service bills at Hamburg Distributors normally distributed with a mean of R225 and a standard deviation of R55. In a group of 500 agents how many would we expect to have a bill that is $100 or less? 1.1 Given that the life of light bulbs purchased from a hardware store follows a normal distribution with a mean life u = 30 months standard deviation a = 4. Determine the following probabilities: 1.1.1 The life of the bulb is between 30 and 35 months. (2) 1.1.2 The life of the bulb is greater than 21months. (2) 1.1.3 The life of the bulb is less than 40 months. (2) 1.2 Weights of product samples are 10,6,24 and 12. Determine the weight variance. (3) 1.3 Customer support agents monthly customer service bills at Hamburg Distributors normally distributed with a mean of R225 and a standard deviation of R55. In a group of 500 agents how many would we expect to have a bill that is $100 or less?

Answer rating: 100% (QA)

10 Given thal U 30 o 4 P 30 x 35 P ... View the full answer