# pROBABILITY AND STATISTIC..HELP................

11,184 results

### statistics

The p value is the: a. probability with which a test statistic would occur if the research hypothesis were true. b. probability with which a test statistic would occur if the null hypothesis were true. c. cutoff probability at which a test statistic is considered extreme. d. ...

### statistics

The p value is the: a. probability with which a test statistic would occur if the research hypothesis were true. b. probability with which a test statistic would occur if the null hypothesis were true. c. cutoff probability at which a test statistic is considered extreme. d. ...

### statistics

The p value is the: a. probability with which a test statistic would occur if the research hypothesis were true. b. probability with which a test statistic would occur if the null hypothesis were true. c. cutoff probability at which a test statistic is considered extreme. d. ...

### writing

When citing statistics from a web page in your speech you need to provide which of the following: ALL The date and source of the statistic What population(s) the statistic represents The author responsible for the statistic or quotation

### statistic

A candidate for public office has claimed that 60% of voters will vote for her. If 5 registered voters were sampled, 1. What is the probability distribution function for this voting? 2. What is the probability that exactly 3 would say they favor this candidate? 3. Calculate ...

### Probability and statistic

Suppose the counts recorded by a Geiger counter follow a Poisson process with an average of two counts per minute. Round the answers to 3 decimal places. (a) What is the probability that there are no counts in a 30-second interval? (b) What is the probability that the first ...

### pROBABILITY AND STATISTIC..HELP...................

a missile protection system consists of n radar sets operating independently each with probability .9 of defecting an aircraft entering a specified zone.all radar sets cover the same zone.if an airplane enters the same, find the probability that it will be detected if n=2 and n=4

### Math Help

Poll of statistic students revealed that 44% study alone, 31% study in a group, 12% study both alone and in a group Find the probability that a randomly selected statistic student studies alone but not in a group.

### Statistic

6.16 Calculate each binomial probability: a. X = 2, n = 8, ð = .10 b. X = 1, n = 10, ð = .40 c. X = 3, n = 12, ð = .70 d. X = 5, n = 9, ð = .90

### statistic and probability

a disk drive is randomly selected from 50 available disk drives, of which five are defective. What is the probability that it is not defective?, hope you answer this, thanks! :)

### statistic

Roll two 6-sided dice and examine their sum. a) How long will it take to roll "snake-eyes" (a pair of ones)? b) What is the probability of rolling a sum of 7 on the first roll? c) What is the probability of rolling a sum of 7 on the fourth roll? d) What is the probability of ...

### statistic

How can the probability distribution of prices of new cars be described

### statistic

How can the probability distribution of prices of new cars be described

### Statistic

Jake plays basketball. Assume y= the number of basketball goals that Jake makes during a given season, and assume y can only take values from 0 to 6. The following table represents the probability distribution for the discrete random variable y. y0123456 P(y) 0.09 0.11 0.24 0....

### statistic

A coin is tossed 6 times. Find the probability that all 6 tosses are tails.

### Statistic

If you roll a die 35 times and 7 of the rolls result in a "5," what empirical probability was observed for the event "5"?

### probability and statistic

Suppose that the number of asbestos particles in a sample of 1 squared centimeter of dust is a Poisson random variable with a mean of 1000. What is the probability that 10 squared centimeters of dust contains more than 10090 particles? Round your answer to 3 decimal places.

### statistic

You draw one card from a shuffled standard deck or cards (cards are in four suits-red diamonds, red heart, black clubs and black spades-and are numbered 2,3,4,5,6,7,8,9,10, J,O,K,A). A.What is the probability of drawing a red card B.What is the probability of drawing a queen c...

### statistic

You draw one card from a shuffled standard deck or cards (cards are in four suits-red diamonds, red heart, black clubs and black spades-and are numbered 2,3,4,5,6,7,8,9,10, J,O,K,A). A.What is the probability of drawing a red card B.What is the probability of drawing a queen c...

### Statistic

A quiz consists of 10 multiple-choice questions. Each question has 5 possible answers and only one of them is correct. A student has not studied for the quiz and will pick his answers randomly. 1)Define the random variable x that will be used for problem, and give the ...

### Statistic

In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 What are the inner fences?

### College and Math Courses

Is statistic 243 equivalent to AP Statistic?

### Animal Science

I need a statistic of how many dogs and cats are currently in a foster home in the us. Does anyone know a website that has this credible statistic? thanks

### statistic math

it is known that 5% of all parts manufactured at Plant F are defective. If 30 part are randomly selected what is the probability that all 30 parts are not defective and what is the probability that at least one of the 30 parts is defective?

### statistic

based on 125 flights, 76% arrive on time. whats the probability that 80 flights arrive on time, probability that 20 or less flights are late?

### Probability and statistic

An assembly consists of three mechanical components. Suppose that the probabilities that the first, second, and third components meet specifications are 0.95, 0.96, and 0.98. Assume that the components are independent. Let X be the number of components that meet specifications...

### Statistic

Below are listed the numbers of doctors in various specialties by gender. Pathology Pediatric Psychiatry Male 12,575 33,020 27,803 Female 5,604 33,351 12,292 Choose 1 doctor at random. (a) Find the probability of choosing a Pathologist or a female? b.) Find the probability of ...

### STATISTIC

IT IS IMPOSSIBLE TO GET 7 KINGS WHEN SELECTIONG CARDS FROM A SHUFFLED DECK. EXPRESS THE INDICATED DEGREE OF LIKELIHOOD AS A PROBABILITY VALUE BETWEEN 0 AND 1 INCLUSIVE.

### statistics

I need so help figuring out which statement is true or false. 1. A parameter always describes a larger group than a statistic. 2. The sampling distribution of a statistic is the distribution of values taken by the statistic in all possible samples of all possible sizes from ...

### Statistic

At peak periods 15 of attempted logins to an email service fail. log-in attempts are independent and each has the name probability of failing. Ann logs in repeatedly until she succeeds A. Find the probability that Ann needs to log in atleast four times before she succeeds B. ...

### math, please double check me

. The state of Maryland has a healthy children goal for childhood obesity. In the next 5 years, the state has a goal of decreasing the obesity rate to 11.3%. The current population mean obesity rate is 15.6%. After two years of a pilot intervention program in Garrett County ...

### Math

I'm really stuck on these STATS questions.Can someone please help! 1. The probability of a car in a population having faulty brakes is .05. If we take a sample of 150 cars, find the standard deviation of the sampling distribution. 2. The strength of ten I-beams produced in a ...

### Statistic

Under 20 21-30 31-40 Male 12 12 17 Female 13 16 21 If two people are selected at random, what is the probability they are both female?

### statistic

Given a normal population with ì = 40 and ó = 8, what is the probability of obtaining a sample mean between 39 and 41 for a sample of n = 16 scores?

### Statistics

How do frequency tables, relative frequencies, and histograms showing relative frequencies help us understand sampling distributions? A. They help us to measure or estimate of the likelihood of a certain statistic falling within the class bounds. B. They help us visualize the ...

### statistic in probability

in how many ways can advertising agency promote 12 items 6 at a time during 12-minute period of tv time

### Statistic

An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a capacity of 160, if it wants the probability of accommodating all reservation holders to be at least 95%.

### statistic

roll 2 standard dice and add the numbers. what is the probability of getting a number larger than 9 for the first time on the third roll?

### Statistics

TRUE or FALSE: The p-value of a hypothesis test is the probability that the null hypothesisis true given the sample statistic obtained.

### statistic & probability

How many 5 digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6 if repeition are not allowed. do i use 7P5? since i am choosing 5 numbers from 7 and they can't be repeated?

### statistic homework

suppose that a detective file in new orleans has 63 current unsolved murders. what is the probability that at least 35 of the victims knew their murders

### Statistic

At peak periods, 15% of attempted log-ins to an email service fail. Log-ins attempts are independent and each has the same probability of failing. Ann logs in repeatedly until she succeeds. A. find the probability that Ann needs to log in at least four times before she ...

### statistic math

the local weatherman has been accurate (successful) in his forecast 80% of the time. find probability that he is accurate exactly 3 of the next 5 days. helppp

### Math; Statistic

At peak periods, 15% of attempted log-ins to an email service fail. Log-ins attempts are independent and each has the same probability of failing. Ann logs in repeatedly until she succeeds. A. find the probability that Ann needs to log in at least four times before she ...

### statistic & probability

An order of ward presentation has been devised for seven people: Jeff, Karen, Lyle, Maria, Norm, Olivia, and Paul. How many ways can the men be presented first and then the women?

### Stats

2 samples were collected to determine whether there was a difference between two weight loss methods targeting men. The average weight loss method is provided for the 2 samples along with the respective standard deviations. Is the second method - with an average weight loss of...

### statistic

Assume that adults have IQ scores that are normally distributed with a mean of \mu=105μ=105and a standard deviation \sigma=20σ=20. Find the probability that a randomly selected adult has an IQ less than 145.

### statistic

a bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean of 175 and a standard deviation of 15. if an applicant is randomly selected, find the probability of a rating that is between 150 and 200

### Statistics

To do inferential procedures comparing two proportions, we need another variance formula (our ruler). This formula is based on what principle? A) The variance of the difference of two statistics is the difference of the variances of each statistic. B) The variance of the ...

### Math-Statistics

Suppose you want to test the claim that mean is not equal 3.5. Given a sample size of n = 45 and a level of significance of a = 0.10, when should you reject H0 ? A) Reject H0 if the standardized test statistic is greater than 1.96 or less than -1.96 B) Reject H0 if the ...

### statistic

For a two-tailed hypothesis test, the test statistic is z = 1.42. What is the p-value?

### Statistics

The p-value is the probability of the observed statistic given the null hypothesis is true. A) True B) False False?

### Statistic

If a person told you what month he was born, would it be unusual to guess the date of his birth ( not including the year)? Justify your answer. (Note: An event is to be considered "unusual" if its probability is less than or equal to 0.05.)

### statistic

3 statistics professors and 7 chemistry professors are available to be advisors.If each professor has an equal chance of being selected, what is the probability that both professors are cgemistry professors?

### Statistic

15% of m&m's candies in a bag are yellow. If you randomly pull 3 m&ms of the bag what is the probability the first one is yellow and the next two are not? A. 11% B. 22% C. 67% D. 85% My answer is D. 1 - 15% =0.85. I think I'm doing it wrong

### statistics

Suppose you want to test the claim that mu is not equal to 3.5. Given a sample size of n = 31 and a level of significance of alpha = 0.10 when should you reject Ho? A) Reject Ho if the standardized test statistic is greater than 2.575 or less than -2.575. B) Reject Ho if the ...

### statistic

how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?

### statistic help please

2. A survey of 259 families was made to determine their vacation habits. The two way table below sorts the families by location and the vacations by the length of the vacation. Rural Suburban Urban Total 1–7 days 80 39 37 156 8ormore days52 32 19 103 Total 132 71 56 259 What...

### STATISTIC

A die with 12 sides is rolled. What is the probability of rolling a number less than 11? Is this the same as rolling a total less than 11 with two six-sided dice? Explain. A. 2/6 B. 3/6 C. 4/6 D. 5/6 My answer is d ,is it correct

### statistic

A random sample of size n = 72 is taken from a finite population of size N = 644 with mean μ = 239 and variance σ2 = 325. Use Table 1. a-1. Is it necessary to apply the finite population correction factor? Yes No a-2. Calculate the expected value and the standard ...

### math

As a a test of a new measurement process, 10 measurements are made on pieces of glass known to have conductivity 1. The average of the 10 measurements is 1.07. Indicate whether 1 and 1.07 is a parameter or statistic and explain why. I know 1.07 is a statistic. Please explain ...

### Statistics

which of the following statements are correct? In hypothesis process, you should a)define the statistical hypothesis b)determine the region of acceptance c)calculate the test statistic d) compare the test statistic e)all the above

### Statistics

To determine whether themean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy program tests: Ho: mu = 1.4 Ha: mu > 1.4 The calculated value of the test statistic is z = 2.42. ==> How do I calculate the p-...

### math

A statistic professor plans classes so carefully that the lengths of her classes are uniformly distributed between 46.0 and 56.0 minutes. Find the probability that a given class period time is less than 51.75 minutes

### STATISTIC

A die with 12 sides is rolled. What is the probability of rolling a number less than 11? Is this the same as rolling a total less than 11 with two six-sided dice? Explain. A. 2/6 B. 3/6 C. 4/6 D. 5/6 Please i need help ,my answer is D

### Statistics

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study, 449 babies were born, and 250 of them were girls. Use the sample data with .01 significance level to test the claim that with this method, the probability of a baby being a...

### math

As a a test of a new measurement process, 10 measurements are made on pieces of glass known to have conductivity 1. The average of the 10 measurements is 1.07. Indicate whether 1 and 1.07 is a parameter or statistic and explain why. I understand that 1.07 is a statistic. ...

### Statistic

The average number of houses sold by a company is 2 houses per day what is the probability that exactly 3 houses will be sold in one week

### statistic

A multiple-choice test has 48 questions, each with four response choices. If a student is simply guessing at the answers, a. What is the probability of guessing correctly for any question? b. On average, how many questions would a student get correct for the entire test? c. ...

### statistics

The below table shows the probabilities generated by rolling one die 50 times and noting the up face. What is the probability of getting an odd up face? roll 1 Probability 0.22 roll2 probability 0.10 roll 3 probability 0.18 roll 4 probability 0.12 roll 5 probability 0.18 roll ...

### Statistic 103

The average teachers salary in Connecticut( ranked first among states) is $57,337. suppose that the distribution of salaries is normal with a standard deviation of $7500. What is the probability that a randomaly selected teacher makes less than $52,000 per year?

### math probability

this is a probability question... Suppose you are asked to choose a whole number between 1 and 13 inclusive. (a) what is the probability that it is odd?...7/13 (b) What is the probability that it is even?...6/13 (c) what is the probability that it is a multiple of 3?...4/13 (d...

### statistics

mortgage broker is offering home mortgages at a rate of 9.5%, but the broker is fearful that this value is higher than many others are charging. A sample of 40 mortgages filed in the county courthouse shows an average of 9.25% with a standard deviation of 8.61%. Does this ...

### pROBABILITY AND STATISTIC..HELP...................

A small store installed a diesel-powered generator for emergency power outage because they function independently of electric power. The past history of the town indicates that on about 5% of days during summer the town loses electricity due to high winds. However, high winds ...

### hypothesis statistic

how a t Test can be employed in hypothesis testing by the use of directional vs. nondirectional hypotheses. Discuss types of research where using the t statistic may be an appropriate alternative to using a z-score. Respond to at least two of your fellow students’ postings.

### statistic

will you help with my statistic class

### Statistics

Can someone please help with this? A measurement follows the normal distribution with a standard deviation of 15 and an unknown expectation μ. You can consider that measurement to be the "original" distribution. Two statisticians propose two distinct ways to estimate the ...

### math statistic

In Megabucks, a player who correctly chooses five out of the six winning numbers gets $400. What is the probability of winning $400? Answer is 0.0000924 in the book but I really don't know where I'm doing mistake. my work is = 6!/5!(1!) combination Thank you so so much for ...

### statistic

Quiz has 6 questions. Each question has five possible answers, only one of each 5 answers is correct. If student randomly guesses on all six questions, what is the probability to answer 2 questions right? Tip: first, you have to define parameters of Binomial distribution: n - ...

### Probability and statistic

The time until recharge for a battery in a laptop computer under common conditions is normally distributed with mean of 270 minutes and a standard deviation of 50 minutes. a) What is the probability that a battery lasts more than four hours? Entry field with incorrect answer (...

### Statistic math

student is graduating from their university and has applied to jobs at company A and B. The student thinks they have a 40 % chance of a receiving an offer from company A and a 50 % chance of receiving an offer from company B. If the student receives an offer from company A, ...

### Quantitative Statistic

Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 20 stations last Tuesday, the correlation was .78. At the .01 significance level, is the correlation in the population greater than ...

### Business Statistic

X f(x) 0 .25 1 .20 2 .15 3 .30 4 .10 Is it prpbsbility distribution valid? Explain and list the requirement for a valid probability distribution Calculate the expected value x Calulate the variance of x calculate the standard deviation of x

### Statistic

In a jar there 12 white balls 8 red balls 4 greens all with the same size if a person selects one ball at random find the probability it is a red ball.

### Statistic

A urn contains 21 red balls, 14 white balls If we randomly select 2 balls, one after the other without replacement, what is the probability that both of the balls selected are red?

### statistic

In order to attract customers, an ice cream company has started a STAR game. Any person who collects four stars gets a free family size bucket of ice cream. Suppose that the probability of an ice cream pack contains a star is 0.3 (an ice cream pack cannot contain more than one...

### Statistic

test consists of 10 multiple choice questions with five choices for each question. As an experiment, you GUESS on each and every answer without even reading the questions. What is the probability of getting exactly 7 questions correct on this test?

### statistic

If 55% of a television viewing population watched a program called ¡§Name that Poem¡¨ one evening, what is the probability that, in a random sample of 100 viewers, less than 50% of the sample watched the program?

### Statistic

According to the CDC, 25 % of college students get the flu every year. (a) If 7 college students are selected at random? What is the probability that exactly 6 of them have the flu? (b) What is the mean and standard deviation for this distribution?

### statistic homework

If 55% of a television viewing population watched a program called ¡§Name that Poem¡¨ one evening, what is the probability that, in a random sample of 100 viewers, less than 50% of the sample watched the program?

### Statistics

If bird flu mortality in one sample of 100 is 20% and in another sample of 100 it is 30%. Is the difference in mortality rate is significant? Solve for the statistic value of Z at probability alpha level of 0.05. Please show your solution.

### URGENT Statistics

In performing two-tailed hypothesis test with v=20, you obtain a t-statistic of 2.41. The p-value is: Between 2% and 5%. I need help understanding how this range was gotten. I know that the t-statistic is between t.025 and t.01 and since this is a 2-tailed test these t-values ...

### statistic

if the p value of the test statistic id equal to 1.36, then the p-value is

### statistic

Given TWO SETS of congruent angles, what is the probability of selecting two consecutive angles that are congruent?

### statistic

I a 3 team league the teams play each other once per year. Team A won 3 over a 2 year period. Team B won 4 and Team C won 5 What is the probability of Team wining all two games next season

### statistics

After years of data collection by college students, it has been determined that the distribution of course grades in Ms. Green’s Statistic II class follows a normal distribution with a mean of 62 and a standard deviation of 14. (a) A student will pass Ms. Green’s course if...

### Statistic

a batch of 350 raffle tickets contains four winning tickets. you buy four tickets. what is the probability that you have at least one winning ticket?

### statistic

in a beacside it rains on 20percent of days and is windy on 30percent a days.if rain and wind are independent on any particular days find the probability that it rains and it windy

### math statistic

The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.