The amount of coffee that people drink per day is normally distributed with a mean of 17 ounces and a standard deviation of 5 ounces. 8 randomly selected people are surveyed. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( b. What is the distribution of ☎? ☎ N c. What is the probability that one randomly selected person drinks between 15.5 and 18.5 ounces of coffee per day? d. For the 8 people, find the probability that the average coffee consumption is between 15.5 and 18. ounces of coffee per day. e. For part d), is the assumption that the distribution is normal necessary? Yes No

Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard deviation g= 15. Find the probability that a randomly selected adult has an IQ less than 118. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ less than 118 is (Type an integer or decimal rounded to four decimal places as needed.)

The average number of words in a romance novel is 64,159 and the standard deviation is 17,401. Assume the distribution is normal. Let X be the number of words in a randomly selected romance novel. Round all answers to 4 decimal places where possible.a. What is the distribution of X? X ~ N(__________ , ___________) b. Find the proportion of all novels that are between 50,238 and 58,939 words. _______________c. The 85th percentile for novels is_____________________  words. (Round to the nearest word)d. The middle 60% of romance novels have from ______________ words to  ________________words. (Round to the nearest word)

The ratings of applicants for credit are normally distributed with a mean of 200 and a standard deviation of 50. Find the 60th. percentile, the rating score that separates the lower 60% from the top 40%.  Round to the nearest integer.       a. 208   b. 187   c. 211   d. 213