10 results

experiment - In statistics, a controlled and repeatable process

A binomial probability experient is conducted with the given parameters. Compute the probability of

A binomial probability experient is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment.
n = 40, p = 0.05, x = 2
P(2) =
Answer is [B]0.2777[/B]. Using Excel formula of =BINOMDIST(2,40,0.05,FALSE) or using our [URL='http://www.mathcelebrity.combinomial.php?n=+40&p=0.05&k=2&t=+5&pl=P%28X+%3D+k%29']binomial probability calculator[/URL]

A professor wants to test all possible pairwise comparisons among three means. If we need to maintai

A professor wants to test all possible pairwise comparisons among three means. If we need to maintain an experiment-wise alpha of 0.05, what is the error rate per comparison after applying Bonferroni correction?
We are given:
[LIST]
[*]? = 0.05
[*]n = 3
[/LIST]
Bonferroni Correction = ?/n
Bonferroni Correction = 0.05/3
Bonferroni Correction = [B]0.01666666667[/B]

A survey was conducted that asked 1007 people how many books they had read in the past year. Results

A survey was conducted that asked 1007 people how many books they had read in the past year. Results indicated that x overbarequals11.3 books and sequals16.6 books. Construct a 90% confidence interval for the mean number of books people read. Interpret the interval.
x bar = 11.3
s = 16.6
n = 1007
[URL='https://www.mathcelebrity.com/normconf.php?n=1007&xbar=11.3&stdev=16.6&conf=90&rdig=4&pl=Not+Sure']We use our confidence interval calculator[/URL] and get [B]10.4395 < u < 12.1605[/B].
[B][I]We interpret this as:
If we repeated experiments, the proportion of such intervals containing u would be 90%[/I][/B]

Bacteria in a petra dish doubles every hour. If there were 34 bacteria when the experiment began, wr

Bacteria in a petra dish doubles every hour. If there were 34 bacteria when the experiment began, write an equation to model this.
Let h be the number of hours since the experiment began. Our equation is:
[B]B(h) = 34(2^h)[/B]

Consider a probability model consisting of randomly drawing two colored balls from a jar containing

Consider a probability model consisting of randomly drawing two colored balls from a jar containing 2 red and 1 blue balls. What is the Sample Space of this experiment? (assume B= blue and R=red)
The sample space is the list of all possible events
[LIST]
[*]RRB
[*]RBR
[*]BRR
[/LIST]

If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and d

If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and dfe?
a = Number of groups/conditions = 5
dfn = a - 1
don = 5 - 1
[B]dfn = 4[/B]
N = 5 * 6 = 30
dfe = N - a
dfe = 30 - 5
[B]dfe = 25[/B]

In a factory that manufactures tires, a machine responsible for molding the tire has a failure rate

In a factory that manufactures tires, a machine responsible for molding the tire has a failure rate of 0.2%. If 1,000 tires are produced in a day, of which 6 are faulty, what is the difference between the experimental probability and the theoretical probability?
Theoretical probability = Failure Rate * Tires
Theoretical probability = 0.002 * 1000
Theoretical probability = 2
The experimental probability was given as 6, so the difference is:
6 - 2 = [B]4[/B]

Percent Error

Free Percent Error Calculator - Percentage error is the difference between an experimental measured value and a theoretical actual value

Probability

Free Probability Calculator - This lesson walks you through the basics of probability like the probability definition, events, outcomes, experiments, and probability postulates

You roll a standard, fair, 5-sided die and see what number you get. Find the sample space of this ex

You roll a standard, fair, 5-sided die and see what number you get. Find the sample space of this experiment. Write your answer using { } symbols, and write your values in order with a comma but no spaces between
Sample Space:
[B]{1,2,3,4,5}[/B]