8,971 Answered Questions for the topic statistics

Statistics Math Algebra 1 Algebra 2

04/10/22

Two dice are rolled. Determine the probability of the following. Rolling an even number or a number greater than 10.
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Statistics

04/10/22

Find critical value and critical region.
A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender​ selection, the proportion of baby girls is less than 0.5. Assume that... more
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Statistics

04/09/22

Find test statistics value, p- value, critical value and critical region.
A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender​ selection, the proportion of baby girls is less than 0.5. Assume that... more
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Statistics

04/09/22

Find statistic test and p-value

In a study of the accuracy of fast food drive -through orders, onerestaurant had 30 orders that were not accurate among 372orders observed. Use a 0.10 significance leve to 10%. Does theaccuracy... more
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Statistics

04/09/22

95% show up only for a flight of the time. Airline can fit 40 pax at $4000 but sells 42 tickets. What is the expected value of x? What is the interpretation of this value?
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Statistics Probability

04/08/22

I need help with probability statistics!!
The lengths of births in a small rural village are normally distributed with a mean of 269 days and a standard deviation of 15 days.In what range would you expect to find the middle 98% of most... more
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Statistics

04/07/22

An apple a day.
 An apple a day: A supermarket sells apples in bags labeled as weighing 10 pounds A sample of 50 bags: had a mean weight of 10.3 pounds with standard deviation of 0.1 pound. Someone wants to know... more
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Statistics

04/07/22

help with this problem
In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 53.3 inches, and standard deviation of 1... more
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Statistics

04/07/22

i need help solving this

A population of values has a normal distribution with μ=51.5 and σ=89.2. You intend to draw a random sample of size n=215. Please show your answers as numbers accurate to 3 decimal places.Find the... more
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04/07/22

Statistics relaitve error and calibration error
Obsidian or what others call ‘dragon glass’ is said to contain trace analysis of Iridium. Based from extensive previous trace analysis of Ir of obsidian samples by Aemon, it was found out that the... more
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Statistics

04/06/22

Based on a sample of 800 people, 26% owned cats. The p-value is?
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Statistics

04/06/22

Find the area of the shaded region.

The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15Between 106 and 128
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Statistics

04/06/22

Sketch region and find probability

mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0
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Statistics

04/06/22

Sketch region and find probability

mean of 0 and a standard deviation of 1 Draw a graph and find the probability of a bone density test score between -2.12 and 2.12
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Statistics

04/06/22

Find the probability of selecting a class that runs between 51.25 and 51.5 minutes.
A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 49.0 and 54.0 minutes. Find the probability that a given class period runs... more
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Statistics

04/05/22

If Air Force only accepts someone who is at top 15%, what is his minimum required height?
If Air Force only accepts someone who is at top 15%, what is his minimum required height?mean = 70 inches standard deviation = 2.5 inches
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Statistics

04/05/22

Please help me find How many of the 15 students do we expect to attend the festivities? (Round your answer to the nearest whole number.)
A school newspaper reporter decides to randomly survey 15 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, she knows that 13% of students... more
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Statistics

04/05/22

Which of the following correlation coefficient represents the most linear function? A 0.976 B 0.001. C- 0.002 D - 0989
Which of the following correlation coefficient represents the most linear function?A 0.976B 0.001.C- 0.002D - 0989
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Statistics

04/05/22

What is the probability
Studies have shown that girls at age 3 have heights that are normally distributed with a mean of 37 inches and a standard deviation of 3.5 inches. c. What is the probability that a 3-year-old girl... more
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Statistics

04/04/22

Find Upper and Lower Bounds on CI
Do male and female servers work the same number of hours? A sample of 21 female servers worked an average of 33 hours per week, with a standard deviation of 2. A sample of 24 male servers worked an... more
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Statistics

04/04/22

please help me find the standard deviation of this question
The Higher Education Research Institute at UCLA collected data from 203,967 incoming first-time, full-time freshmen from 270 four-year colleges and universities in the U.S. 71.4% of those students... more
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Statistics

04/04/22

Please help me find p(X=x) and x*P(X=x) to complete the table
Suppose that you are offered the following "deal." You roll a die. If you roll a six, you win $10. If you roll a four or five, you win $5. If you roll a one, two, or three, you pay $4.Construct a... more
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Statistics

04/04/22

statistics chapter 11-13
The World Series ends when a team wins 4 games. Suppose that sports analysts consider one team a bit stronger, with a 55% chance to win any individual game. Estimate the likelihood that the... more
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Statistics

04/04/22

statistics expected gain or loss
You buy a lottery ticket to a lottery that costs $10 per ticket. There are only 100 tickets available to be sold in this lottery. In this lottery there are one $445 prize, two $95 prizes, and... more
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Statistics

04/03/22

Find z such that 64% of the standard normal curve lies between −z and z. (Round your answer to two decimal places.)
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