55 Answered Questions for the topic Distribution

10/24/21

#### How to find the Var(X) for a sum of a rolled die and a 3 sided spinner?

A fair 6-sided die has the numbers −1, −1, 0, 0, 1, 2 on its faces. A fair 3-sided spinner has edges numbered −1, 0, 1. The die is thrown and the spinner is spun. The number on the uppermost face...
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10/18/21

#### Complete the probability distribution table. (Report probabilities accurate to 4 decimal places.) Find the mean of this probability distribution. (Appropriate rounding rules apply.)

The Sky Ranch is a supplier of aircraft parts. Included in stock are 6 altimeters that are correctly calibrated and two that are not. Three altimeters are randomly selected without replacement. Let...
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08/23/21

#### Sampling Distribution: Customers at the Madison Coûteux are polled on a routinely basis. The conglomerate's administration states that its customers, 75% of them, valued the food as very good.

Customers at the Madison Coûteux are polled on a routinely basis.The conglomerate's administration states that its customers, 75% of them, valued the food as very good.A consumer-based testing...
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08/23/21

#### Sampling Distribution: There are 350 workers in a firm, with an average age of 37.6 years and an 8.3 years of standard deviation.

There are 350 workers in a firm that consists of the following:-An average age of 37.6 years-Standard deviation of 8.3 yearsWhat is the probability that a random sample of 45 employees would have...
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08/23/21

#### Normal Distribution: Credit card balances, consisting of mean = $2870, standard deviation = $900.

Normal Distribution question: Credit card balances, consisting of:Mean = $2870, standard deviation = $900.25 credit card holders are chosen at random.What is the probability that the mean balance...
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05/19/21

#### Binomial Distribution Question?

Studies show that 15% of people do not signal when changing lanes. Bob stands at a stop sign and checks the first 20 cars to see if they signal or not. What if the probability that no more than 3...
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#### normal distribution

suppose 16 coins are tossed. find the probability of getting the following result using the binomial probability formula and the normal curve approximation.exactly 4 heads.use the table of areas...
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#### normal distribution

the mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. what is the probability that an individual's clotting time will be less than 4 seconds or greater than 9...
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03/11/21

#### Statistics Probability

from 1985 to 2006 the average height of an NBA player was 6 foot 7 (79 inches) suppose the distribution is approximately normal and the standard deviation is 2.8 inches. what is the probability...
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03/11/21

#### Statistics Probability

A manufacturer knows that their items have a normally distributed length with a mean of 17.4 inches, and a standard deviation of 1.4 inches. if 13 items are chosen at random what is the probability...
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Distribution Probability

01/29/21

#### normal distribution with µ= 500 and s= 100 .

Scores on the SAT form a normal distribution withµ= 500 ands=100.a) What is the minimum score necessary to be in the top 20% of the SAT distribution?

12/09/20

#### What is the test statistic for this problem? Please help!!

The marital status distribution of the U.S. male population, age 15 and older, is as shown below.Marital Status Percent
never...
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10/08/20

#### What salary marks the start of the upper 20% ?

Given that the average monthly salary of nurses in the Philippines is 23,000php with a standard deviation of 1,000 php. What salary marks the start of the upper 20% ?

10/07/20

#### What is the proportion

It is estimated that the mean life span of concrete drill bits is 20 hours. Suppose a construction company purchases drill bits that have a lifespan that is approximately normally distributed with...
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08/27/20

#### Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C.

A single thermometer is randomly selected and tested. Find P81, the 81-percentile. This is the temperature reading separating the bottom 81% from the top 19%.

08/27/20

#### Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C.

A single thermometer is randomly selected and tested. Find P81, the 81-percentile. This is the temperature reading separating the bottom 81% from the top 19%.

06/07/20

#### bell shaped distribution

The commute time to work in the U.S. has a bell shaped distribution with a population mean of 24.4 minutes and a population standard deviation of 6.5 minutes. What proportion of the population has...
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03/22/20

#### Probability & Distribution question

Thank you so much!! I really want to master this unit :(

09/12/19

#### A fair sided spinner has sides 1-5. It is spun 28 times, the random variable X represents the number of times the spinner lands on 2. Find the probability that the spinner lands on 2 at least 7 times

Note-the spinner is fair

07/10/19

#### What exactly is 70mm print and why does anyone care?

There has been a bit of controversy lately over the release of Tarantino's *Hateful Eight* movie. As I understand it, the movie was scheduled to play in a particular theater in Los Angeles that...
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07/10/19

#### How do streaming services earn money?

Netflix and Prime are (I think) the two leading competitors in streaming services. Both services are releasing original movies and shows which are exclusively available in their platform. But...
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07/09/19

#### Are there any global standards to identify a movie?

I know there exist approaches like **EIDR** (Entertainment Identifier Registry) and **ISAN** (International Standard Audiovisual Number). But I do not know how many movies are contained within...
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06/27/19

#### How are digital movies sent to a movie theater?

For many years, movies were stored on rolls of film that were physically mailed to theaters. Now, most theaters project their movies digitally. But how are these digital movies sent to the theater?...
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06/26/19

#### Why we don't use "TV" before "miniseries"?

Why we typically say "TV series", but we don't say "[TV miniseries](https://en.wikipedia.org/wiki/Miniseries)" (i.e., instead of this, we simply say "miniseries")?Does it mean, that there are...
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