8,918 Answered Questions for the topic statistics

Statistics Math

10/05/22

im having trouble with this math question
Suppose a lab is developing a robust new test to look for diabetes in children. If a child actually has diabetes, the probability that the test will be positive is 82%, indicating they have... more
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Statistics Math

10/05/22

im having trouble with this math question
A survey of new Toyota Corolla owners has shown that during the first year of ownership, 15% of Corollas required repairs once, 7% required repairs twice, and 5% required repairs three or more... more
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Statistics

10/05/22

Two marbles are selected from a box containing 7 blue and 3 red marbles. what is the probability that a blue marble and a red marble are selected
Two marbles are selected from a box containing 7 blue and 3 red marbles. what is the probability that a blue marble and a red marble are selected
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Statistics

10/05/22

The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs.

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... more
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Statistics

10/05/22

Can I get help on this
Suppose the scores of students on an exam are Normally distributed with a mean of 298 and a standard deviation of 63. Then approximately 99.7% of the exam scores lie between the numbers  and  such... more
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Statistics

10/05/22

Am I able to get help on this please
If the average low temperature of a winter month in Rochester, NY is 18∘ and the standard deviation is 7.9, then according to Chebyshev's theorem, the percentage of average low temperatures in... more
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Statistics

10/04/22

STAT CLASS \\\\\\\
The probability of a tourist visiting an area cave is 0.70 and of a tourist visiting a nearby park is 0.61. The probability of visiting both places on the same day is 0.41.The probability that a... more
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Statistics

10/04/22

Suppose the wheel is spun twice. On the first spin, you place two bets: one on even and one on the first dozen.

Suppose the wheel is spun twice. On the first spin, you place two bets: one on even and one on the first dozen. On the second spin, you also place two bets: one on "high" and one straight up bet on... more
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Statistics

10/04/22

Hypothesis Testing
Hypothesis Testing A company manufactures car batteries with an average life span of 2 years or more. An engineer believes that that this value is less than that claimed by the company. Using 10... more
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Statistics

10/04/22

A binomial experiment has the given number of trials n and the given success probability p. n=9,p=0.4
A binomial experiment has the given number of trials n and the given success probability p. n=9,p=0.4
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Statistics

10/03/22

fill out table below

The table below describes students from 200 different colleges. The table shows the results of the subjects who have participated in binge drinking. Fill out the table below:   Binge... more
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Statistics Probability

10/03/22

Suppose that E and F are two events and that N(E and F)=430 and N(E)= 690. What is P(F|E)?
HELPPP MATH 120!!!!
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Statistics

10/02/22

Linear Regression
Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The data are shown below: Number of Pages... more
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Statistics

10/02/22

Linear Regression
Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The data are shown below: Number of Pages... more
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Statistics

10/01/22

stat question 6
Do male and female servers at Swank Bar work the same number of hours? A sample of 70 female servers worked an average of 34 hours per week, with a standard deviation of 5. A sample of 70 male... more
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Statistics Math

10/01/22

Normal distribution

The average number of words in a romance novel is 64,259 and the standard deviation is 17,110. Assume the distribution is normal. Let X be the number of words in a randomly selected romance novel.... more
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Statistics

09/30/22

Use the given confidence interval to find the margin of error and the sample mean. 1.) (4.56 , 9.72)
Use the given confidence interval to find the margin of error and the sample mean. 1.) (4.56 , 9.72)
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Statistics

09/30/22

Z SCORE AND PROBABILITIES
1.     A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. a.      What are the exam scores that separate the top and bottom 5 percent of the... more
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Statistics

09/30/22

Z scores and probabilities
The honors program at Brad's university only accepts students with an entrance exam score over 400. What percentage of students would be eligible if the students at Brad's school have an... more
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Statistics

09/30/22

how do you solve for y?
-3+5y=-18
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Statistics

09/29/22

A coin is tossed 5 times. What is the probability of getting all heads?
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Statistics

09/28/22

business statistics
The stock market jumped 1% today. Lending Tree, a peer-to-peer lender, has a average daily range of 5.5%. Are these large movements and how do we tell
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Statistics

09/28/22

business statistics
For a standard normal distribution, given:P(z < c) = 0.4828Find c.
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Statistics

09/28/22

Business statistics
For a standard normal distribution, find:P(z > -0.19)
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Statistics Math Algebra 1 Geometry

09/28/22

The lower bound is ?
A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample​ variance S^2 is determined to be 12.1.a- Construct a​ 90% confidence interval for... more
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