1,029 Answered Questions for the topic Statistics Question

Statistics Question

12/29/15

What is the best statistic for me to use to determine whether a wellness intervention was successful?
What is the best statistic for me to use to determine whether a wellness intervention was successful? I have data from 2012 (pre-intervention) for 60 people followed by annual data... more
Follows • 2
Expert Answers •1
Statistics Question

12/15/15

Could someone give me some help with this Please!!!!!
I need help with this!!!!   Assume that the significance level is α=0.05. Use the given information to find the P-value and the critical value(s).The test statistic of z=1.63 is obtained when... more
Follows • 2
Expert Answers •1
Statistics Question Statistics Standard Deviation

12/14/15

The following question has to do with statistics
Maria Thomas a teacher at Henry elementray school noted grades of her students which were distributed with a mean of 74 and a standard deviation of 10. María thomas has informed us that 6.3 percent... more
Follows • 2
Expert Answers •1
Statistics Question

12/14/15

I have no Idea what too do with this Problem!!!!!!
I can't solve this please assist   Find the critical value za/2 that corresponds to the given confidence level 84%    za/2 = rounded to two decimal places as needed
Follows • 2
Expert Answers •1
Statistics Question

12/14/15

Urgent Help Needed!!!!
could someone help me with this please!!!!   Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation 15. Find P3, which is the IQ score... more
Follows • 1
Expert Answers •1
Statistics Question

12/14/15

Statistics
compute 95% confidence interval to estimate for the population meanμ, if the sample mean =27.4, standard deviation δ=16 and n=100
Follows • 2
Expert Answers •1
Statistics Question

12/12/15

can you calculate the mode of a distribution using only the standard deviation and mean?
Stats question asking me to calculate the mode of a frequency, but only information given is the mean and the standard deviation. Is this possible? 
Follows • 4
Expert Answers •3
Statistics Question Statistics Math Help For College

12/11/15

Statistics, P-value. Help please!
A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has determined that home delivery will be successful if the average time... more
Follows • 2
Expert Answers •1
Statistics Question

12/10/15

The mean of a set of scores on a computer science test is 77 and the standard deviation is 5.
The mean of a set of scores on a computer science test is 77 and the standard deviation is 5.a. Convert each of the following scores to standard units: 89, 68, 94 and 55.b. Find the test scores... more
Follows • 1
Expert Answers •1
Statistics Question

12/08/15

Statistics Help Please
Could someone assist me with this please!!!!   Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of... more
Follows • 2
Expert Answers •1
Statistics Question

12/04/15

Statistics problem
With the height of 67 inches, Ronald with the shortest president of a particular club in the past century. The club president of the past century have a mean height of 7.8 inches and a standard... more
Follows • 1
Expert Answers •1
Statistics Question Statistics

12/03/15

Hypothesis testing!!
I am so lost in where to begin for this question...   A random sample of 10 students were trying to determine which profession was best suites for them. They each took aptitude tests for Social... more
Follows • 2
Expert Answers •1
Statistics Question

12/02/15

Percentage of graduates that get degree in 5 years when average is 6.5 and standard deviation is 1
Standard deviation is 1 year and average is 6.5 years 
Follows • 2
Expert Answers •1
Statistics Question

12/01/15

The weights of cockroaches living in a typical college dorm are approximately distributed with a mean of 80 grams and a standard deviation of 4 grams.
The percentage of cockroaches weighing between 71 grams and 80 grams is about?
Follows • 2
Expert Answers •1
Statistics Question

12/01/15

Findinng the proportion
Using sample data A confidence level of 95% N=2392 x=971 What is the best point estimate of the population proportion P.  Please round 3 places. Thanks
Follows • 1
Expert Answers •1
Statistics Question

11/29/15

16. What is the Pvalue?
A 1-tail, normal distribution of n = 64, alpha risk = 10%.Sample mean = 206; Ho: Population mean is no more than 202Sample standard deviation = 16.What is the Pvalue?
Follows • 2
Expert Answers •1
Statistics Question Statistics

11/29/15

Find the margin of error given that .056 <p< 0.75
How to find the margin of error given that .056 <p< 0.75
Follows • 1
Expert Answers •1
Statistics Question Expected Value

11/28/15

Expected Value
I get to answer 1 question a day that I have a 70% chance of getting that question right. I'm offered prizes for getting a streak of questions right in a row. However, anytime I accept a prize, the... more
Follows • 3
Expert Answers •2
Statistics Question

11/28/15

Business Statistics
Assuming that women's heights are normally distributed with a mean of μ=63.6 and standard deviation δ=2.5 in find the following: a) P(63.6 +n/10<x<65.0+n/10) b) P(x>58.1+n/10) Note n=20   more
Follows • 2
Expert Answers •1
Statistics Question

11/26/15

Find sample size
A survey is planned to estimate the proportion of voters who support a proposed gun control law. The estimate should be within a margin of error of plus-or-minus 5 % with 99% confidence, and we do... more
Follows • 2
Expert Answers •1
Statistics Question

11/24/15

Statistics Normal Distribution with Standard deviations
Question 1: A manufacturer of ice pops fills each plastic container with a fruity liquid,leaving enough room so that consumers can freeze the product. A filling machine is set sothat the amount of... more
Follows • 2
Expert Answers •1
Statistics Question Statistics Normal Distribution

11/23/15

A new drug will not be considered for acceptance by Health Canada unless it causes serious side effects in less than 0.01percent of the population
A new drug will not be considered for acceptance by Health Canada unless it causes serious side effects in less than 0.01percent of the population. In a trial with 80,000 people, 9 suffered serious... more
Follows • 2
Expert Answers •1
Statistics Question

11/23/15

difficult statistics question................................. see below
4. (Hypothetical) You are conducting research on the prevalence of severe binge drinking among college students. You define severe binge drinking as consuming 10 or more alcoholic beverages at a... more
Follows • 3
Expert Answers •2
Statistics Question

11/23/15

How many households must you survey if you want to be 94% confident that your sample percentage has a margin of error of three percentage points?
a. Assume that a previous study suggested that vehicles are owned in 86% of households. b. ) Assume that there is no available information that can be used to estimate the percentage of ... more
Follows • 2
Expert Answers •1
Statistics Question

11/21/15

Statistics: How to determine Ho and Ha?
Does the princeton Review improve SAT scores? Five students were SRS and asked to participate in the experiment. Their SAT scores were recorded before the review and after the review.   Person:  ... 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.