5,385 Answered Questions for the topic probability

Probability Math Statistics

03/10/22

If Roberto scored 85, what was his z-score?
On a nationwide math test, the mean was 75 and the standard deviation was 10. If Roberto scored 85, what was his z-score?
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Probability Statistics

03/10/22

how would you change the game (ticket prices, number of tickets, prize amounts, etc.) in order to encourage more people to purchase tickets while still raising at least $4000 for your organization?
If you were organizing a raffle like this, how would you change the game (ticket prices, number of tickets, prize amounts, etc.) in order to encourage more people to purchase tickets while still... more
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Probability Statistics

03/10/22

Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 59 and 69?
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 64 and a standard deviation of 5. Using the... more
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Probability

03/10/22

A coin is thrown 3 times .what is the probability that atleast one head is obtained? https://starofgeeks.com
A coin is thrown 3 times .what is the probability that atleast one head is obtained? https://starofgeeks.com
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03/09/22

Probability of winning
If I purchase 10 lottery tickets, with 44,020 prizes to be won and 1,100,000 total tickets sold, what are my odds of winning?
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Probability Math English Statistics

03/09/22

I don’t understand how to calculate a and get the standard deviation for b, the mean for c and e, and don’t get f
The distribution of actual weights of wedges of cheddar cheese produced at a dairy is normal with a mean of 9.1 ounces and a standard deviation of 0.2 ounces. (Round to 2 decimal places for all... more
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Probability Math English Statistics

03/09/22

What method/ process should I use in order to solve this? It’s due in one day.
Large adult population has a mean IQ of 113, standard deviation of 25. Suppose 40 are randomly selected for a market research campaign.(z-values (2 decimal places) and rest of the answers to 4... more
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Probability Math English Statistics

03/09/22

I don’t understand how to do this question.

At a particular University, students’ grades in introductory statistic classes are generally unimodal and skewed to the left with a mean of 63 and a standard deviation of 18. (Round to 2 decimal... more
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Probability Math

03/09/22

What is the probability that a seven digit phone number ends “309” and has distinct digits?
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Probability Math

03/09/22

What is the probability that all digits are odd in a seven digit phone number?
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Probability Math Statistics Maths

03/09/22

A population consist of five (5) measurements 2,3,5,6 and 7. What is the variance of the sampling distribution?
A population consist of five (5) measurements 2,3,5,6 and 7. What is the variance of the sampling distribution?a.0.89b.1.29c.3.90d.2.20
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Probability Math

03/08/22

Suppose a 7-digit phone number is chosen at random.
(a) What is the probability that the digits are distinct (i.e. that no digits repeat)? (b) What is the probability that all digits are odd? (c) What is the probability that it ends “309” and has... more
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Probability Math

03/08/22

Suppose a 7-digit phone number is chosen at random. What is the probability that the digits are distinct (i.e. that no digits repeat)?
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Probability Math Statistics Maths

03/08/22

The weights of 1000 children have an average of 45 kilograms and a standard deviation of 5 kilograms.
Situation: You volunteered to be part of the medical mission in your barangay and in-charge to get weight of the children. The weights of 1000 children have an average of 45 kilograms and a... more
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Probability Statistics

03/07/22

Calculate the probability of not rolling a 2. (Express your answer as a decimal rounded to the nearest ten-thousandth.)
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Probability Finance

03/07/22

Dr. Meara could address this situation
A second way that Dr. Meara could address this situation is to accept a new contract from a local health insurer. For the sake of simplicity, assume that a private health care plan that currently... more
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Probability Finance

03/07/22

What would be the financial impact of altering staffing to achieve 98% capacity?

One way that Dr. Meara can reduce the costs of unused capacity is to adjust staffing so that the department achieves 98% capacity utilization by type of personnel position. What would be the... more
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Probability Math Statistics Maths

03/07/22

You plan to open a new pizza restaurant and found out the data for a similar restaurant which is presented below.
You plan to open a new pizza restaurant and found out the data for a similar restaurant which is presented below.amount - percentage$40000 - 10% loss$0 - 35%$40000 - 45% profit$200000 - 10%... more
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Probability Math Statistics Maths

03/07/22

The weights of 1000 children have an average of 45 kilograms and a standard deviation of 5 kilograms.
Situation: You volunteered to be part of the medical mission in your barangay and in-charge to get weight of the children. The weights of 1000 children have an average of 45 kilograms and a... more
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03/06/22

statistics and probability

After Bank A announced the creation of a new cryptocurrency, EBOCOIN, several analysts began to develop models that aim to explain the evolution of the price of this cryptocurrency over time.... more
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Probability Math Statistics Maths

03/06/22

The weights of 1000 children have an average of 45 kilograms and a standard deviation of 5 kilograms.
Situation: You volunteered to be part of the medical mission in your barangay and in-charge to get weight of the children. The weights of 1000 children have an average of 45 kilograms and a... more
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Expert Answers •1
Probability Math Statistics Maths

03/06/22

The weights of 1000 children have an average of 45 kilograms and a standard deviation of 5 kilograms.
Situation: You volunteered to be part of the medical mission in your barangay and in-charge to get weight of the children. The weights of 1000 children have an average of 45 kilograms and a... more
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Probability

03/05/22

question about probability
of the 58 people who answered yes to aquetion 15 were male of the 63 people who answerd no to the quetion 9 were male if one person is selected at random from the group what is the probability... more
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Probability Statistics

03/04/22

The middle value under the normal curve is always 0
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03/04/22

I'm stuck on the latter part of this equation, for some reason I got a 12 for the .4 proportion when I attempted to standardize it. This does not correlate with my z distribution chart. Thanks!
Based on historical data, your manager believes that 25% of the company's orders come from first-time customers. A random sample of 224 orders will be used to estimate the proportion of... more
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