Question

Asked Nov 7, 2019

- Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is normally distributed, with a mean of 50,000 miles and a standard deviation of 12,000 miles.
- What proportion of trucks can be expected to travel between 38,000 and 62,000 miles in the year?
- What percentage of the trucks travel less than 35,000 miles in the year?
- What percentage of the trucks travel more than 57,000 miles in the year?
- How many miles will be traveled by at least (equal to and more than) 72% of the trucks?

Your Answers:

- _____________ B. _____________ C. _____________ D. ________

- Warranty records show that the probability that a new car needs a warranty repair in the first 90 days is 0.05. If a sample of 3 new cars is selected:

- What is the probability that none needs a warranty repair? __________________
- What is the probability that at least one needs a warranty repair? _________________
- What is the probability that more than one needs a warranty repair? __________________

The key components of this problem are:

Sample size (trials) = 3 new cars

Probability of “success” = 5%

Number of “successes”:

A: Exactly 0

B: 1 or more

C: More than one

Step 1

Hey there! Thank you for posting the question. Since there are multiple questions posted, we will answer first question. If you want any specific question to be answered then please submit that question only or specify the question number in your message.

It is given that the mean and standard deviation are 50,000 and 12,000, respectively.

Step 2

1)

The required proportion is obtained as follows:

Step 3

2)

The required percentage is o...

Tagged in

Q: Today, the waves are crashing onto the beach every 5.8 seconds. The times from when a person arrives...

A: Note:Hey there! Thank you for posting the question. However, since your question has more than 3 sub...

Q: 63% of all students at a college still need to take another math class. If 4 students are randomly s...

A: It is given that n =4 and p = 0.63.The probability mass function of binomial distribution is given b...

Q: An auditor, pressed for time and on a low budget, is concerned with account errors on customer credi...

A: From the given information,Sample size = 25,Sample mean = -$23Sample standard deviation =$16

Q: About 8% of the population has a particular genetic mutation. 1000 people are randomly selected.Find...

A: Here, X be the binomial random variable. The standard deviation for the binomial random variable is ...

Q: A time for the 100 meter spirnt of 13.8 seconds at a school where the mean time for the 100 meter sp...

A: Solution:The z score formula is

Q: In jumbled box of pens and pencils, the probability of randomly choosing a sharpened pencil is .54 a...

A: Given dataprobability of randomly choosing a sharpened pencil P(S) = 0.54probability of randomly cho...

Q: Please show TI 84 steps

A: The provided random sample are given as:

Q: 2. In your classroom you have a box with 100 small square tiles in it. The tiles are identical excep...

A: a. Two “read the data” questions for the dot plot can be,Question 1. What is the maximum number of y...

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean...

A: Given mean = 1503Standard deviation = 308The minimum score required for admission = 1626The Z score ...