1,029 Answered Questions for the topic Statistics Question

Statistics Question

03/27/16

The time that a skier takes on a downhill course has a normal distribution with a mean of 12.3 minutes and a standard deviation of 0.45 minutes.
What is the probability that on a random run this skier takes less than 11 minutes?
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Statistics Question Standard Deviation Mean

03/27/16

Statistics Question: The repair cost of a Subaru engine is normally distributed with a mean of $5,850 and standard deviation of $1,125.
The repair cost of a Subaru engine is normally distributed with a mean of $5,850 and standard deviation of $1,125. Random samples of 20 Subaru engines are drawn from this population and the mean... more
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Statistics Question Standard Deviation Mean

03/27/16

Statistics Question: The temperature in Orlando on a given summer day is normally distributed with a mean of 98.6° F
The temperature in Orlando on a given summer day is normally distributed with a mean of 98.6° F and a standard deviation of 0.60° F. If 36 summer days in Orlando are randomly selected, find the... more
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Statistics Question Statistics Standard Deviation Mean

03/27/16

statistics question: The salaries of Pet Detectives are normally distributed with a mean of $32,000
The salaries of Pet Detectives are normally distributed with a mean of $32,000 and a standard deviation of $3000. If 100 Pet Detectives are randomly selected, find the probability that their... more
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Statistics Question

03/26/16

Find the probability that a single value of the standard normal random variable will be between zero and 1.52
Find the probability that a single value of the standard normal random variable will be between zero and 1.52
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Statistics Question

03/25/16

What is the minimum score required for admission?
Suppose ACT Mathematics scores are normally distributed with a mean of 20.8 and a standard deviation of 5.4. A university plans to admit students whose scores are in the top 30%
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Statistics Question Statistics Statistical Method

03/25/16

You want to determine the migration pattern of bears in Yellowstone park
Determine Whether the situation calls for a survey, an observational study or an experiment explain your answer.    you want to determine the migration pattern of bears in Yellowstone... more
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Statistics Question Statistics

03/23/16

Help with this stats question please
Systolic blood pressure (SBP) was measured for 30 people of different ages. The results are shown in the blue cells.Part 1 - Develop a best-fit regression line for this data. Using this line,... more
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Statistics Question

03/22/16

What is the best predicted value for the response variable
What is the best predicted value for the response variable if there is no evidence of significant correlation in a sample?
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Statistics Question Statistics

03/22/16

determine an interval that is likely to contain the percent of all households who have a dog as a pet
In a survey of 500 households 23% say that they have a dog as a pet determine an interval that is likely to contain the percent of all households who have a dog as a pet
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Statistics Question Statistics

03/22/16

Round all decimals answers to 3 decimals places if necessary
The first 100 people to go to a minnesota Vikings football game (out of the 60,000 who attended the game) are given a survey asking them to evaluate the parking situation at the game. Is this a... more
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Statistics Question Statistics Statistics Method

03/22/16

Explain who is using the better method and why?
Mr smith and mr. Jones both plan to do an experiment to determine whether a coin (would land heads 50% of the time) Mr. Smith plans to flip the coin 1,000 times, but Mr. Jones only plans to flip it... more
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03/22/16

can somone please check my work.
The data from placebo 0mg is listed below. 57,27,32,31,34,38,71,33,34,53,36,42,26,52,36,55,36,42,36,54,34,29,33,33     What is the mean number of correct responses of the participants after... more
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Statistics Question

03/22/16

Alex and Juana went on a 116-mile canoe trip with their class. On the first day they traveled 29 miles. What percent of the total distance did they canoe?
I have to solve this problem. Multiple choice. 400%, 4%, 25%, or 0.25%                            
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Statistics Question Statistics

03/21/16

Which of the following survey methods should wholesome company use to make a valid conclusibout the percentage of students at Jefferson high school who like
Wholesome company has been hired to design a healthy menu for lunch at Jefferson high school. They want to conduct a survey to determine what percentage of Jefferson's 750 students like carrots.... more
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Statistics Question Statistics

03/21/16

Based upon this data which of the following conclusions are valid
In a survey based upon a random sample of 1000 custromers wishTV found that 47% of it's customers are satisified with wishTV's service. select all that apply  First choice: exactly 47% of... more
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Statistics Question Statistics

03/21/16

Read the problem Round all decimal answers to 3 decimals place if necessary
The heights of students are normally distributed with an average height of 65 inches and a standard deviation of 3.5 inches. If a student falls outside a 95% interval centered around the mean the... more
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03/20/16

Probability and Statistics Help!
There are 24 popsicles in a cooler. Ten are grape. Six are orange. Eight are cherry.If you grab 3 popsicles from the cooler, what is the probability they will be:a) All grapeb) All the same... more
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Statistics Question

03/18/16

(AT) What is the independent variable of this experiment? How many levels does it have?
It is ADHD treatment case study
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Statistics Question Frequency

03/17/16

Can someone help me/check over with this statistics word question
Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly traded for at least a year, have a stock price of at least $5 per share, and have reported... more
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Statistics Question

03/16/16

help with an equation
Can someone help me with the question. I figured out how to do the bottom two but with the notes i have i am not sure how to do the first equation.   For the numbers 1,2,4,16 compute the... more
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Statistics Question

03/16/16

did I answer this question correctly?
If you are told only that you scored in the 80th percentile, do you know from that description exactly how it was calculated? Explain   No I would not know how it was calculated. In order for me... more
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Statistics Question

03/15/16

statistical difference
what is the statistical difference if you have 4 pickers picking 100 apples and 1 picker picks 40, versus 2 pickers picking 100 apples and 1 picker picks 60
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Statistics Question

03/15/16

Not sure how to report 4.77 days. 4 days? Or 5 days?
I have a group of people answering how many days in a week they are physically active, so the scale is from 1 to 7. The average I got is 4.77 days, and the 95% CI is (4.42, 5.13). Then how should I... more
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Statistics Question

03/14/16

find the average age at which people will experience their first cardiac incident.
If the age of an initial cardiac incident (heart attack or sudden cardiac arrest) is normally distributed with a population standard deviation = 13 years, find the average age at which people will... more
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