14.The replacement time of televisions is normally distributed with an average of 8.2 years and a standard deviation of 1.1 years (according to data from "Getting Things Fixed", Consumer Report). If Your company wants to offer a guarantee of service such that only 1% of televisions are replaced. What should be the warranty time? select one: a. 6.4 years b. 4.1 years c. 5.6 years d. 4.8 years

The following values represent the closing prices of a stock(in dollars) on five trading days: 10,12,14,16,18. A) What is the standard deviation?(show work) B) What is the standard deviation of 12,14,16,18,20? (Show work)

Suppose that replacement times for washing machines are normally distributed with a mean of 8.3 years and a standard deviation of 1.3 years. Find the replacement time that separates the top 18% from the bottom 82%. Round to the nearest tenth. Click to view page 1 of the table. Click to view page 2 of the table, O A. 8.5 years O B. 9.5 years OC. 8.9 years O D. 7.1 years Click to select your answer. tv MacBook Air 4) F7 80 D00 F4 ES esc FI * & # $ % 9 @ 6 7 8 2 3 4 P W E R

1. IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z score. a. b. If we consider "usual IQ scores to be those that convert z scores between -2 and 2, is Einstein's IQ usual or unusual? C. The organization MENSA, which calls itself the "high IQ society", requires a score of 130 or higher. What percent of adults would qualify for membership? 2. In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0 represents the worst possible life and 10 represents the best possible life. The responses were normally distributed, with a mean of 5.4 and a standard deviation of 2.2. Find the probability that a randomly selected study participant's response was: a. Less than 4 b. Between 4 and 6 c. More than 8 3. The red blood cell count for a population of adult males can be approximated by a normal distribution, with a mean of 5.4 million cells…

1. Give an examle of a paired date set 2. Why is the chi-square distribution always positive?

29. The scores on a Sociology examination are normally distributed with a mean of 70 and a standard deviation of 10. If the instructor assigns A's to 15%, B's to 25%, C's to 40 %, D's to 15% , and F's to 5% of the class, find the cutoff points for these grades. .e dav ordd bnit ddr 02 ns PA