8,943 Answered Questions for the topic statistics
Statistics
02/19/22
A particular fruit's weights are normally distributed, with a mean of 255 grams and a standard deviation of 10 grams. The heaviest 9% of fruits weigh more than how many grams?
Statistics
02/19/22
A professor collected data from one of her classes to investigate the relationship between study time per week
What are the least squares regression line for this data14, 25, 15, 5, 10, 12, 5, 21 GPA: 3.1, 3.7, 3.4, 3.0, 3.1, 3.3, 2.7, 3.82.Based on data what is the slope and interpret the meaning in...
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Statistics
02/19/22
A professor collected data from one of her classes to investigate the relationship between study time per week.
What are the explanatory and response variables
Statistics
02/19/22
A professor collected data from one of her classes to investigate the relationship between study time per week (average number of hours) and college GPA. The data or as shown is listed below
Use strapplet.com to generate needed infothe data is14, 25, 15, 5, 10, 12, 5, 21 ; GPA : 3.1, 3.7, 3.4, 3.0, 3.1, 3.3, 2.7, 3.8
Statistics
02/19/22
maxium margin error
You measure 26 dogs' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 10 ounces. Based on this, what is the maximal margin of error associated...
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Statistics
02/19/22
A normal distribution
A normal distribution hast=80 and sigma=10. What is the probability of randomly selecting a score greater than 90 from this distribution ?
Statistics Mechanical Engineering
02/19/22
Need help understanding how to solve this type of statistics problem.
Five 100ohm resistors, each having a 5% tolerance, are connected in series. What is theoverall nominal resistance and tolerance or the combination?
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Statistics
02/18/22
The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a Normal distribution.
The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a Normal distribution. This distribution has a mean of 59 and a standard deviation of 5. Using...
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Statistics
02/18/22
Find a 90% confidence interval for the mean of all tree ring dates from this archaeological site. (Round your answers to the nearest whole number.)
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02/18/22
Andy is a restaurant owner: He believes 72% of his customers are…
Andy is a restaurant owner: He believes 72% of his customers are satisfied with the food quality of his restaurant: From a random sample of 82 customers, what are the following probabilities?...
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02/18/22
Suppose 2% of students drink more than 3 cups of coffee each day.
Suppose 2% of students drink more than 3 cups of coffee each day. To check this claim, a researcher randomly selected a sample of 131 students and found that 4 drink more than 3 cups of coffee each...
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02/18/22
Suppose 2% of students drink more than 3 cups of coffee each day.
Suppose 2% of students drink more than 3 cups of coffee each day. To check this claim, a researcher randomly selected a sample of 131 students and found that 4 drink more than 3 cups of coffee each...
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02/18/22
At a particular university, students' grades…
At a particular university, students' grades in introductory statistic classes are generally unimodal and skewed to the left with a mean of u = 63 and a standard deviation of o = 18.0. (Round to 2...
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02/18/22
The distribution of actual weights of wedges…
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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02/18/22
In a large population of adults, the mean IQ is 123…
In a large population of adults, the mean IQ is 123 with a standard deviation of 17. Suppose 60 adults are randomly selected for a market research campaign. (Round to 2 decimal places for all...
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02/18/22
The number of undergraduates at Small University…
The number of undergraduates at Small University is approximately 2200, while the number at Large University is approximately 57200. At both schools, a simple random sample of about 2% of the...
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Statistics Probability
02/17/22
Statistics and Probability
The Highway Loss Data Institute’s Injury and Collision Loss Experience Report rates car models on the basis of the number of insurance claims filed after accidents. Index ratings near 100 are...
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02/17/22
MATH/ STATISTICS AND PROBABILITY
The mathematics Club of College of Arts and Sciences of University XYZ will sponsor an intercollegiate quiz bee. Each contestant will answer 50 questions: 20 in mathematics, 10 in current events,...
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Statistics Math
02/17/22
Statistics: Math Help - Binomial Distribution
A fair coin is flipped 13 times. Find the probability that more than 7 of the flips turn up tails.
__0.290527
__0.265906
❌0.242364
__0.316153
__0.342697
__0.178765
Statistics
02/17/22
What is the probability that you will choose a person in the children or young adult category?
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Statistics
02/17/22
Raw Data for statistics
How do you find the cumulative proportion
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Math Help - z-score
A random experiment involves drawing a sample of 12 data values from a normally distributed population. The random variable is the z-score of the maximum of the data...
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02/15/22
Recent MLS listings of houses for sale in Edmonton…
Recent MLS listings of houses for sale in Edmonton show that 40% have attached garages, 25% have detached garages, and 18% have a home theatre. Additionally, 50% of houses with a home theatre have...
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Statistics
02/14/22
I need help answering a homework problem
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4.5 years, and standard deviation of 1.3 years.The 2% of items with the shortest lifespan will last less...
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Statistics
02/13/22
what the probability?
Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that at least 5 of...
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