5,341 Answered Questions for the topic probability
06/03/21
Hi can someone please help with this, by using the formula of z-scores and z-scores table. Thank you so much!
If the systolic blood pressure of obese people has a mean of 132 and standard deviation of 8, find the probability that a person have the following blood pressure. Assume the variable is normally...
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06/02/21
Hi can someone please help with this, by using the formula the z-scores and z-scores table
The average age of the company's president is 56 years old. Assume the variable is normally distributed is four years, find the probability that the age of a president will be between 52 and 58.
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Probability
06/02/21
probability and stastics
A test for a certain disease is found to be 95% accurate, meaning that it will correctly diagnose the disease in 95 out of 100 people who have the ailment. For a certain segment of the...
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Probability Statistics
06/02/21
What is the standard deviation of the distribution?
This equation comes from Edgenuity's course of Statistics, and I am taking the course as a high school senior. I understand how to find the standard deviation.Standardized tests for certain...
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Probability Statistics
06/02/21
What is the probability that 83% or more of this sample…?
This equation comes from Edgenuity's course of Statistics, and I am taking the course as a high school senior. I understand how to find the z-score and, in this case, not the standard deviation.A...
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Probability
06/02/21
Probability and Statistics
The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121 and standard deviation of 17 .Someone qualifies as having Stage 2 high blood pressure if their...
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Probability Algebra 2
06/01/21
Algebra 2 Probability
It is estimated that 4% of people will get strep throat. Of the people with strep throat, the test for infection will give a positive reading 97% of the time. Given someone does not have strep...
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Probability Math
05/31/21
How many different ways can the members of the Defense Subcommittee be chosen from among the 29 senators on the Appropriations Committee?
The US Senate Appropriations Committee consists of 29 members—15 Republicans and 14 Democrats. The Defense Subcommittee consists of 19 members—10 Republicans and 9 Democrats. How many different...
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Probability
05/30/21
Please help me this probability question
A grocery store is sponsoring a sale promotion where the cashier give away one of letters A, E ,L,S ,U ,V for each purchase. If a customer collects all six letters he gets 10 dolar worth for...
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05/30/21
For a Geometric distribution with parameter p = 1/3 ,then the mean and variance are given by
05/30/21
If a random variable X follows exponential distribution with parameter λ = 2 ,then its probability density function is given by
choose the correct answera. f (x) 2e2x , x 0 b. f (x) 12 e 12 x , x 0 c. f (x) 2e2x , x 0 d. f (x) 12 e 12 x , x 0
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Probability Statistics
05/28/21
A coach has 36 seats. 85% of people show up for their journey. You have been hired by a coach company to recommend how many tickets they sell.
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05/28/21
In a survey of 250 people, 46% said that they like football, 64% said that they like baseball, and 82% said that they liked either football or baseball.
How many people in this group like football and baseball?
100
65
28
70
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Probability Statistics
05/28/21
determine the area between Z=0.92 and Z=1.1
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05/28/21
PLEASE I NEED HELP
According to a survey, about 45% of people ages 18 and older in a city have a dog. You ask 6 randomly chosen people (ages 18 and older) whether they have a dog. What is the probability that at most...
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05/28/21
What is the probability that at most 4 people have a dog? Round your answer to the nearest hundredth.
According to a survey, about 45% of people ages 18 and older in a city have a dog. You ask 6 randomly chosen people (ages 18 and older) whether they have a dog.
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05/27/21
Find the probability income
The per capita disposable income for residents of a U.S. city in a recent year is normally distributed, with a mean of approximately $44,000 and a standard deviation of about $2450. Use this...
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05/27/21
Find the probability
The per capita disposable income for residents of a U.S. city in a recent year is normally distributed, with a mean of approximately $44,000 and a standard deviation of about $2450. Use this...
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05/27/21
z-score and curve
A. What is the mean and standard deviation for a z-score? B. What is the total area under the curve of a normal distribution?
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05/27/21
Probability basketball
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