1,029 Answered Questions for the topic Statistics Question

Statistics Question

03/21/17

IM STUCK! PLS HELP!
Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation 20. Find P 15, which is the IQ score separating the bottom 15% from the top 85%.
Follows • 1
Expert Answers •1
Statistics Question

03/20/17

which level of measurement is required for the mean?
which level of measurement is required for the mean?  
Follows • 2
Expert Answers •1
Statistics Question

03/18/17

A set of data has an interquartile range of 20 and a lower quartile range of 6. if the data is symmetrica, what is the value of the median?
A set of data has an interquartile range of 20 and a lower quartile range of 6. if the data is symmetrica, what is the value of the median? Please help and explain the outcome..Thanks so much
Follows • 3
Expert Answers •1
Statistics Question Statistics Statistic Sos

03/16/17

Application of Sets
A survey of 72 customers was taken at a bookstore regarding the types of books purchased. The survey found that 43 customers purchased mysteries, 33 purchased sciencefiction, 27 purchased romance... more
Follows • 2
Expert Answers •1
Statistics Question

03/13/17

defective item
defective item, 10 item, some are bad, probability without replacement  
Follows • 2
Expert Answers •1
Statistics Question Statistics Math Help Math Word Problem

03/12/17

stats question
For a normal shaped distribution with μ = 50 and σ = 8: A. What proportion of the scores fall between 46 and 54? B. For samples of n = 4, what proportion of the sample means fall between 46 and 54?... more
Follows • 2
Expert Answers •1
Statistics Question

03/11/17

How to statistically see if there is a correlation
Hi,   Ive got 2 sets of data. 181 figures in each. Can I use Pearson's Corrrelation Coefficient to see if there is a correlation between them. And if so what would this mean r = -0.28, p =... more
Follows • 2
Expert Answers •1
Statistics Question

03/10/17

how to combine two histograms on SPSS stat system
creating a table with a few selected variables within the data set.  I have two tables but would like to combine the two. Can that be done  
Follows • 1
Expert Answers •1
Statistics Question

03/05/17

Statistics
in a test of indigestion tablets, 164 out of a sample of 200 people found out that the tablets were effective. The research team claimed that the tablet was 90% effective. Does the evidence support... more
Follows • 2
Expert Answers •1
Statistics Question Math Statistics Math Help

02/24/17

A highly selective university will only admit students who place in the top 10% on aplacement exam with an average score of 18 and an SD of 6.
The lowest score that a student can earn and be admitted to the university is:         Please help me my Stats teacher is very unclear and is rushing through the material. I cannot fail this... more
Follows • 2
Expert Answers •1
Statistics Question Math Statistics Standard Deviation

02/24/17

The monthly utility bills in a city have an average of $67 and an SD of $7. The percentage of the utility bills in this city that are above $75 is:
 I am struggling with this homework for a stats course. The teacher is very unclear and I cannot afford to fail. Any help would be appreciated it
Follows • 2
Expert Answers •1
Statistics Question

02/24/17

Y=10 + 0.9x, where y represents the final exam score and x is the midterm exam score. Suppose Joe scores an 80.What would be the predicted value of his score
A.81B.The answer cannot be determined from the information given.C.82D.91
Follows • 3
Expert Answers •2

02/23/17

Probability Statistics question, a bit confused.
A population of snakes have total lengths: 7cm, 5cm, 10cm, 13cm, and 9cm.   If two snakes are selected at random without replacement (order does not matter), what is the probability that the... more
Follows • 2
Expert Answers •1
Statistics Question

02/22/17

When a customer withdraws $40 they can only get either two $20 or four $10. If two customers withdraw $40 each, how many outcomes are possible?
Creating a tree diagra.
Follows • 2
Expert Answers •1
Statistics Question

02/20/17

have 35 tulips, 14 red, 11 yellow, 10 purple: what is the probability one is red and one is yellow
What is the probability on have one red and one yellow tullip
Follows • 2
Expert Answers •1
Statistics Question

02/17/17

find the modal age in afrequency distribution in a table with age of employees, number of employees
age of employees             number of employees 18 -20                               4                            21-23                                8 24-26                              ... more
Follows • 2
Expert Answers •1
Statistics Question

02/12/17

What waiting time represents the 90th ​percentile?
The time spent (in days) waiting for a kidney transplant for people ages 35-49 can be approximiated by the normal distribution, as shown in the figure to the right.
Follows • 2
Expert Answers •1
Statistics Question

02/11/17

What is the mean and standard deviation to apply the normal approximation to the binomial?
A study conducted by a local tennis center revealed that 25 percent of its new members have novice level tennis skills. a membership drive in a metropolitan are resulted in 500 new members. It has... more
Follows • 2
Expert Answers •1
Statistics Question

02/05/17

most expensive house there was $591,600 least expensive house was $455,560. How much did the prices of the houses range in the neighborhood?
Statistics
Follows • 4
Expert Answers •3
Statistics Question Mean

02/04/17

STATS QUESTION
In a neighborhood near Simmons, there are 280 families. The average number of members per family is 3.5. How many people live in the neighborhood?a. 980 peopleb. 80 peoplec. 900 peopled. 105 people
Follows • 2
Expert Answers •1
Statistics Question

02/02/17

Find the Value of the following
  8!
Follows • 2
Expert Answers •1
Statistics Question

01/27/17

events and probability die rolling
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two... more
Follows • 2
Expert Answers •1
Statistics Question Statistics Math Help Math Word Problem

01/26/17

question is below i am so lost
A survey of grade point averages over the last 20 years is taken at Academy. It is found that the mean is 2.52, the median is 2.65, and the standard deviation is 0.55. Assuming a normal... more
Follows • 3
Expert Answers •2
Statistics Question

01/14/17

statistics and probability
betting on the color red in the game of roulette has 18/38 chance of winning. what is the expected value and variance for the number of wins in a series of 50 bets on red?
Follows • 2
Expert Answers •1
Statistics Question

01/09/17

Statistics question...help
The probability that Sandra gets a ride to work on any morning is 0.7. The probability that she gets a ride 3 times in a 5-day work week is , and the probability that she gets a ride at least 2... more
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.