8,943 Answered Questions for the topic statistics
Statistics Probability
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...
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Statistics Probability
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...
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Statistics
03/10/22
Probaility help.
Factories A and B produce computers. Factory A produces 3 times as many computers as factory B. The probability that an item produced by factory A is defective is 0.038 and the probability that an...
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Help Solving: A Single Population Mean using the Normal Distribution
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=26.3. You would like to be 99% confident that...
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Statistics
03/09/22
math statistic problem
Suppose you want to select 1000 New Yorkers. Given the population of each borough, what sampling techniques one could use to draw this sample? Explain.NYC has 5 boroughs. Use the 2011 population...
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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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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...
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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...
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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...
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Statistics
03/09/22
Find the probability of “x” successes given the probability of “P” success on a given trial.
A) n=3 x=0 P=0.05 B)n=4 X=3 P=.30 C)n=5 x=2 P=.25
Statistics
03/09/22
If the following data is given, find the mean of this data. Round the answer to the 2 decimal places.
12, 35, 51, -11, 23, 42, 60, -19, 27, 0
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Statistics
03/09/22
n inspector must select 4 tests to perform in a certain order on a manufactured part. He has a choice of 6 tests. How many ways can he perform 4 different tests?
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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
A function g (x) = 3x^2-5x+4 has graph passing through point P = (a,b) where the line tangent to y = g (x) has slope 12 at point P: Use calculus to find the exact value of a.
A function g (x) = 3x2 - 5x + 4 has graph passing through point P = (a,b) where the line tangent to y = g (x) has slope 12 at point P: Use calculus to find the exact value of a.
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Statistics
03/08/22
thermometer reading
A certain company manufactures precision thermometers that are supposed to give readings of 0.00° C at the freezing point of water. Tests on a large sample of these thermometers reveal that some...
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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...
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Statistics Probability
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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Statistics
03/07/22
The mean score on the SAT
The mean score on the SAT is 1014 with a standard deviation of 115. The ACT has a mean score of 21 and a standard deviation of 5. If Luciano, score a 1240 on the SAT and a 30 on the ACT, find his z...
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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%...
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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...
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Statistics
03/06/22
statistics probability
The Real Estate Group NY reports that the mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $2552. Assume the standard deviation is $531. A real estate firm samples...
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Statistics
03/06/22
statistics probability
A manufacturer knows that their items have a normally distributed length, with a mean of 5.4 inches, and standard deviation of 0.9 inches.If 25 items are chosen at random, what is the probability...
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Statistics
03/06/22
Math homework help
The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a...
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Statistics
03/06/22
The life expectancy of a particular brand of tire is normally distributed...
The life expectancy of a particular brand of tire is normally distributed with a mean of 40,000 and a standard deviation of 5,000 miles.Refer to Exhibit 6-6. What is the probability that a randomly...
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Statistics
03/06/22
Excel's NORM.S.DIST function can be used to compute
a. cumulative probabilities for a normally distributed x value
b. the normally distributed x value given a cumulative probabilityc. the standard normal z value given a cumulative probabilityd....
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