jeremiahsingleton
22.04.2021 •
Mathematics
Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures for cellular phone services per consumer unit increased from $242 in 2001 to $619 in 2007. Let the standard deviation of annual cellular expenditure be $64 in 2001 and $204 in 2007. [You may find it useful to reference the z table.]
a. What is the probability that the average annual expenditure of 109 cellular customers in 2001 exceeded $234? (Round "z" value to 2 decimal places, and final answer to 4 decimal places.)
b. What is the probability that the average annual expenditure of 109 cellular customers in 2007 exceeded $596? (Round "z" value to 2 decimal places, and final answer to 4 decimal places.)
Solved
Show answers
More tips
- P Philosophy What is Something for you?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
Answers on questions: Mathematics
- M Mathematics Solve the equation 3x2 + 11z – 4= 0.Help I need to plug these in and find the two answers for x...
- M Mathematics Look at the image and show work 6) translation: 2 units right and 4 units upE, F, G...
- M Mathematics My math teacher has been annoying me her whole class period, im not those type of kids that pick up fast i need someone to explain it to me like a lot im not du.mb i...
- M Mathematics 10 basketball teams participate in a tournament such that the following conditions hold: every team plays every other team exactly once ties are not allowed no team loses...
- M Mathematics Names the multiples of 5 and 4 tequate to less of 40...
- H History What actions taken by napoleon inflamed this station and ut?...
- M Mathematics Solve this please and thank you...
- M Mathematics Please help just please im begging please don t answer something random just for points I will report you ill appreciate it much if your able to just answer one...
Ответ: