Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.

Get a Professional Answer

Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.

100% Satisfaction Guarantee

Rate the answer you receive.

Ask Ryan Your Own Question

Ryan, Engineer

Category: Calculus and Above

Satisfied Customers: 8170

Experience: B.S. in Civil Engineering

40260889

Type Your Calculus and Above Question Here...

Ryan is online now

1. If Z is a standard normal variable, what is the probability

Resolved Question:

1. If Z is a standard normal variable, what is the probability that Z lies between -0.55 and 0.55? (Points : 7) 0.9000 0.4176 -0.9000 -0.4176

2. If Z is a standard normal variable, what is the probability that Z lies between 0.7 and 1.98? (Points : 7) -0.2181 0.2175 0.2181 1.7341

3. If Z is a standard normal variable, what is P(Z > 0.59)? (Points : 7) 0.2190 0.2776 0.7224 0.2224

4. Assume that X has a normal distribution with mean = 60.0 and standard deviation = 4.0. What is the probability that X is less than 53.0? (Points : 7) 0.9599 0.5589 0.0401 0.0802

5. The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz? (Points : 7) 0.0987 0.4013 0.5987 0.3821

6. The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches? (Points : 7) 2.28% 37.45% 47.72% 97.72%

7. A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. What is the score which separates the lower 60% from the top 40%? (Points : 7) 207.8 212.5 187.5 211.3

8. Assume that the distribution of all the temperature readings is a standard normal distribution with the mean reading of 0 degree Celsius and the standard deviation of 1.00 degree Celsius. A thermometer is randomly selected and tested. What is the temperature reading corresponding to the third quartile? (Points : 7) 0.67 degrees 0.53 degrees 0.82 degrees -1.3 degrees

9. In one region, the September energy consumption levels for single-family homes are found to be normally distributed with a mean of 1050 kWh and a standard deviation of 218 kWh. What is the consumption level separating the bottom 45% from the top 55%? (Points : 7) 1021.7 1148.1 1087.8 1078.3

10. In a game, you have a 1/29 probability of winning $106 and a 28/29 probability of losing $9. What is your expected value? (Points : 7) $3.66 -$5.03 -$8.69 $12.34

11. The accompanying table shows the probability distribution for x, the number that shows up when a loaded die is rolled. Find the mean of the given probability distribution. (Points : 6) 4.21 0.17 3.50 4.08

12. Determine whether the given procedure results in a binomial distribution. If not, state the reason why: Rolling a single die 26 times, keeping track of the "fives" rolled. (Points : 6) Not binomial: the trials are not independent. Not binomial: there are too many trials. Not binomial: there are more than two categories for each trial. Procedure results in a binomial distribution.

13. Assume that a procedure yields a binomial distribution with a trial repeated n=5 times. Find the probability of x=2 successes given the probability p=0.70 of success on a single trial. (Points : 6) 0.132 0.464 0.700 0.198

14. Assume that adults have IQ scores that are normally distributed with a mean of 102 and standard deviation of 12. Find the IQ score that separates the bottom 25% from the top 75%. (Points : 6) 110 94 99 105

15. Heights of adult men are normally distributed with a mean of 69 inches and standard deviation of 2.8 inches. If an adult man is randomly selected, what is the probability that he is taller than 64.8 inches? (Points : 6) 0.8664 0.1336 0.9332 0.0668

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal ...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.Freshfield, Liverpool, UK

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.DianeDallas, TX

Meet The Experts:

SusanAthena

Master's Degree

Satisfied Customers:

102

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.