8,972 Answered Questions for the topic statistics

Statistics Business Mathematica

10/08/22

Business mathematics and statistics

The present worth of a bill due at the end of 4 years is rs575 and if the bill were due at the end of 2 1/2 tears its present worth would be rs 620 fund the rate per cent
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Statistics Business Mathematica

10/08/22

Business mathematics and statistics

The present worth of a bill due at the end of 4 years is rs575 and if the bill were due at the end of 2 1/2 tears its present worth would be rs 620 fund the rate per cent
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Statistics

10/08/22

Probability of a Red or Odd numbered marble
A jar contains 10 red marbles numbered 1 to 10 and 10 blue marbles numbered 1 to 10. A marble is drawn at random from the jar. Find the probability of the given event, please show your answers as... more
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Statistics

10/07/22

In a population where 68 % of voters prefer Candidate A, an organization conducts a poll of 5 voters. Find the probability that 5 of the 5 voters will prefer Candidate A.
In a population where 68% of voters prefer Candidate A, an organization conducts a poll of 5 voters. Find the probability that 5 of the 5 voters will prefer Candidate A.
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Statistics

10/07/22

Sample test statistic
You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats.You sample 100 men, and 80% own cats.You sample 200 women, and 75% own... more
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Statistics

10/07/22

Assume the random variable X is normally distributed with mean 50 and standard deviation 7 . Find the 67th percentile
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Statistics

10/07/22

Compute the probability of randomly drawing 5 cards from a deck and getting exactly 3 spades.
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Statistics

10/07/22

sample Test Statistic

You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats.You sample 100 men, and 80% own cats.You sample 200 women, and 75% own... more
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Statistics

10/06/22

GPA students mean

You are testing the claim that the mean GPA of night students is less than the mean GPA of day students.You sample 40 night students, and the sample mean GPA is 2.14 with a standard deviation of... more
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Statistics

10/06/22

Sample sizes question

Two samples are taken with the following numbers of successes and sample sizesr1 = 20  r2 = 30n1 = 50  n2 = 52Find a 85% confidence interval, round answers to the nearest... more
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Statistics Math Geometry

10/06/22

I already have the answer but I'm confused on how to put this in a calculator to get that solution.
How would I type this in a calculator? (Binomial Distribution)P( x=3)=(20) 0.053 (0.95)17=0.0596 3
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Statistics Probability

10/06/22

Introduction to statistics
Suppose a population has µ = 8 and δ= 3. Suppose a random sample of n= 36 is selected. What is the probability that the sample mean is between 7.8 and 8.2?
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Statistics Probability

10/06/22

Introduction satistics
The diameter of a shaft in an optical storage drive is normally distributed with a mean of 0.2508 inch and a standard deviation of 0.0005 inch. The specifications on the shaft are 0.2500± 0.0015... more
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Statistics Probability

10/06/22

Introduction to statistics
The Department of Meteorological Services (DMS) in Gaborone has been issuing warning about expected increases in temperatures in the coming days. A researcher wanted to know how some students at UB... more
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Statistics Probability

10/06/22

Statistics and probability distribution
Hailstorms are common phenomena in parts of a certain country. From past experience it has been shown that in a forestry plantation, there is about an 80% chance that certain tree... more
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Statistics

10/06/22

Compute the probability of randomly drawing 5 cards from a deck and getting exactly 3 spades.
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Statistics Math

10/05/22

im having trouble
Say you have a biased coin and you associate obtaining a head with the value 0 whereas obtaining a tail has a value of 2. Let X be the sum of the values obtained from tossing the coin three times.... more
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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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