Question

# 1. (6 pts) Let x be a random variable that represents the length of time it...

1. (6 pts) Let x be a random variable that represents the length of time it takes a student to write a term paper for Dr. Adam’s sociology class. After interviewing many students, it was found that x has an approximate normal distribution with mean = 6.8 hours and standard deviation = 2.1 hours.

1. Convert the x interval x 4 to a standard z interval.

2. Convert the z-score interval 0 ≤ ? ≤ 2 to a raw score x interval.

1. There is no sign given between x and 4 so i will solve for all the 3 cases

a) x = 4

In z -interval it will be written as

b) x < 4 in z-interval is .

c) x > 4 in z-interval is .

2. The z score interval is

for z = 0, x is = 6.8 + 0*2.1 = 6.8

for z = 2, x is = 6.8 + 2*2.1 = 11

The x-interval is

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Need Online Homework Help?

Most questions answered within 1 hours.

##### Active Questions
• According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are...
• in 100 words Compare and contrast two events motivated by incentives, one where the self-interested behavior...
• FIRST TECHNOLOGY PROJECT: It is recommended that you use MS Excel. This project reviews the concepts...
• The results of experimental archaeology tool-making studies present an interesting opportunity for us to consider the...
• What do anatomical differences in the vocal production apparatus (larynx, pharynx, and oral cavity) between chimpanzees...
• Let a random variable X̄ represent the mean of a sample consisting of 16 observations. The...