945 Answered Questions for the topic Statistics Question

Statistics Question

03/18/18

Statistics Question for Blind Bag purchases.
If the odds of getting a certain character in a blind bag is 1 in 5 and the bags cost $2.00 each, how much will you need to spend before you might get a certain one? Is it as simple as 5 x $2.00 =... more
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Statistics Question

03/18/18

Find the area of the shaded region
A graph depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the area of the shaded region.... (between the IQ scores of 102... more
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Statistics Question Math Help Math Help For College

03/17/18

Given r^2 and SST, Find SSE(need help today)
given r2=0.0798 and sst=769.54, compute sse
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Statistics Question

03/16/18

Standard Deviation
Suppose it is known that the weights of a certain group of individuals are approximately normally distributed with a mean of 140 pounds and a standard deviation of 25 pounds. What is the... more
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Statistics Question

03/15/18

In a hospital 60% of the patients are married. What’s the probability that a sample of one word with 8 patient, had 3 were married
In a hospital 60% of the patients are married.        
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Statistics Question Math Statistics Probability

03/12/18

What is the probability of selecting a jury of all​ students?
The grade appeal process at a university requires that a jury be structured by selecting seven individuals randomly from a pool of eleven students and eight faculty.     (a) What is the... more
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Statistics Question

03/11/18

is it possible for eight employees to earn between $300 and $350 while the ninth earns $1250 per week, and the mean be $430?
need help with this ... math really isn't my thing but I have to have it for masters in nursing 
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Statistics Question

03/11/18

What is the cost to rent a trailer for 3.6 ​hours?
The charge to rent a trailer is $2020 for up to 2 hours plus $6 per additional hour or portion of an hour. Find the cost to rent a trailer for 3.6 hours, 4 hours, and 7.2 hours. 
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Statistics Question

03/09/18

There are 136 passengers on a plane. 78 of them are women. 21 of them are men who purchased non-refundable tickets.
There are 136 passengers on a plane. 78 of them are women. 21 of them are men who purchased non-refundable tickets. 1) If you put the names of all the passengers in hat and then drew two names... more
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Statistics Question Standard Deviation

03/08/18

The weight of a sperm whale’s brain is normally distributed with a mean of 15.5 pounds and a standard deviation of 3.6 pounds.
The weight of a sperm whale’s brain is normally distributed with a mean of 15.5 pounds and a standard deviation of 3.6 pounds. What is the probability a randomly selected sperm whale will have a... more
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Statistics Question

03/08/18

Find the probability of correctly answering th first 4 questions on a multiple choice test if random guesses are made and each question has 5 possible answers
Statistics 
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Statistics Question

03/07/18

Please Help with Statistics
A recent estimate of Congress’ approval rating was 17%. What sample size does this estimate suggest we should use for a margin of error of 0.04 with 95% confidence?
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Statistics Question

03/06/18

Think of a simple random sample X1,...,X5 following the distribution N(mu,sigma^2). Show that the statistic W=(X1+4X4-2X5)/3 is an unbiased estimator of mu.
Also: What distribution does W follow? Specify the mean and variance.
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Statistics Question

03/03/18

Assume the random variable X is normally​ distributed, with mean equals 60 and standard deviation equals 9. Find the 10 th percentile.
find the 10th percentile  
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Statistics Question

02/28/18

When Joe plays a board game with his four sisters, any one of the five players is equally likely to win.
They decide to play the game repeatedly until Joe wins a game, and then they will stop. Assuming that the outcomes are independent, what is the probability that they play at least three games?
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Statistics Question Statistics Non Parametric test

02/23/18

which non-parametric test should be used
MBA_Salary.xlsx contains the annual salaries, in thousands of dollars, earned by individuals who graduated with MBAs in 2015 and 2016 from a certain business school in Canada. We would like to... more
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Statistics Question

02/23/18

what is the area under the standard normal curve between z=−2.9 and z=0.28?
 I need to know the area under the standard normal curve 
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Statistics Question

02/20/18

How much did your classmates typically spend on game downloads last year
is this a statistics question?
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Statistics Question

02/20/18

How many 3-digit number with no repeated digits using 4, 5, 6, 7, 8 can be a) less than 520; b) greater than 600; greater than 5000?
Solve the following problems. Write the formula, give, solution and final answer. 
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Statistics Question Math Statistics

02/18/18

Give your answers as decimals, to two places
You measure 37 textbooks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 5.8 ounces. Based on this, construct a 90% confidence interval for the... more
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Statistics Question Statistics Normal Distribution

02/18/18

read the description . I need work and an explanation
Tom and Jan are planning on applying to attend KSU. Tom takes the ACT while Jan decides to take the SAT. The mean score on the ACT is a 17 with a standard deviation of 5, and the SAT mean score is... more
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Statistics Question Statistics

02/18/18

How many different ways can the officers be appointed?
A corporation must appoint a president, cheif exectuive officer (CEO), cheif operating officer (COO), and cheif financial officer (CFO). It must also appoint a planning committee with five... more
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Statistics Question

02/17/18

please help solve, confused
Assume that a procedure yields a binomial distribution with 2 trials and a probability of success of 0.50. Use a binomial probability table to find the probability that the number of successes is... more
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Statistics Question

02/07/18

If the bookstore stocks 86 copies of the magazine, for what percentage of weeks will there be an insufficient number of copies to meet demand?
i need help on this problem. It's for statistics
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Statistics Question

02/05/18

which type of lottery ticket is purchased the most at a local gas station
is this question statistical
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