Cancel
© 2016 start-seeking.ru
card-image

General Statistics: Ch 5 Test

Set Details Share
Helpfulness: 0
created 2 years ago by GreenHero15
1,568 views

This course is designed to acquaint the student with the principles of descriptive and inferential statistics. Topics will include: types of data, frequency distributions and histograms, measures of central tendency, measures of variation, probability, probability distributions including binomial, normal probability and student's t distributions, standard scores, confidence intervals, hypothesis testing, correlation, and linear regression analysis. This course is open to any student interested in general statistics and it will include applications pertaining to students majoring in athletic training, pre-nursing and business.

updated 2 years ago by GreenHero15

Grade levels:
College: First year, College: Second year, College: Third year, College: Fourth year

show more
1

Determine whether the following is a probability distribution. If not, identify the requirement that is not satisfied:

A police department reports that the probabilities that 0, 1, 2, 3, and 4 car thefts will be reported in a given day are 0.183, 0.311, 0.264, 0.150, and 0.064, respectively.

Not a probability distribution. The sum of the P(x)'s is not 1, since 0.9720 ≠ 1.000.

2

A company manufactures batteries in batches of 25 and there is a 3% rate of defects.

Find the standard deviation for the number of defects per batch.

0.9

3

A machine has 12 identical components which function independently. The probability that a component will fail is 0.2. The machine will stop working if more than three components fail.

Find the probability that the machine will be working.

0.795

4

Suppose you pay $3.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 1 or a 6, nothing otherwise.

What is your expected value?

-$1.33

5

A company manufactures batteries in batches of 18 and there is a 3% rate of defects.

Find the mean number of defects per batch.

0.5

6

The brand name of a certain chain of coffee shops has a 54% recognition rate in the town of Coffleton. An executive from the company wants to verify the recognition rate as the company is interested in opening a coffee shop in the town. He selects a random sample of 10 Coffleton residents.

Find the probability that exactly 4 of the 10 Coffleton residents recognize the brand name.

0.169

7

The Acme Candy Company claims that 8% of the jawbreakers it produces actually result in a broken jaw. Suppose 9571 persons are selected at random from those who have eaten a jawbreaker produced at Acme Candy Company.

Would it be unusual for this sample of 9571 to contain 797 persons with broken jaws?

No, 797 people are within 2 standard deviations of the mean.

8

Determine whether the following is a random variable, and if it is, whether it is discrete or continuous:

The number of pixels in a digital photo.

Discrete

9

Find the mean of the given probability distribution:

The probabilities that a batch of 4 computers will contain 0, 1, 2, 3, and 4 defective computers are 0.5470, 0.3562, 0.0870, 0.0094, and 0.0004, respectively. Round answer to the nearest hundredth.

µ = 0.56

10

The probabilities that a batch of 4 computers will contain 0, 1, 2, 3, and 4 defective computers are 0.4521, 0.3970, 0.1307, 0.0191, and 0.0010, respectively.

Find the standard deviation for the probability distribution.

σ = 0.77


Related pages


the process of fertilization in flowering plantsbsc2010besides annelids segmentation is also seen inpearson java bookdefine electroencephalographyalupent can cause tachycardiahesi a2 review questionsartery and vein labeling quizdisaccharides and polysaccharideshistological structure of blood vesselspolyatomic ion flashcardsplants photosynthesize only in the light plants respireanatomy bone quizdefine gluconeogenesis glycogenolysis and glycogenesisvagal plexusmain functions of vitaminssymptoms of protozoan and helminthic diseases are due topregnant radiographerthe mayflower compact of 1620 asserted thatsynergids are haploid or diploiddigestive system major functionscharacters in the prologue to the canterbury talesholderness case studywhy is sexual reproduction a source of genetic variationhormone that maintains pregnancypsychology memory quizlettexas reality check comblood from the posterior abdominal wall drains into thewhere does starch digestion begin and endshine dalgarno consensus sequencename the muscles responsible for flexing the armmedial bone of forearm in anatomical positionc6h12o6 moleculedull frontal headachemonetary base consists ofbody habitus asthenicdefine paedomorphosishysterosalpingography may be performed for demonstration oftetanus cardiac musclewhat does cacrep stand foron what basis are epithelial tissues classifieddoula oblongatawhich of these statements is correct with respect to osteoclastsdiethyl ether water solubilitymultiple alleles meaningnematoda symmetryspecial senses hearing and equilibrium review sheet 25accessory digestive structuresflagella stainswhat part of the eye constitutes the blind spotdiagram of the digestive system with labelsroot hair plexusexocrine glands ________interrogative expressionsdraw a circulatory systemwhat is the affirmative tú command of leerthe boundary between the external and middle ear is theprokaryote versus eukaryotetranscription translation quizwhat is the most important contributing factor to wrongful convictionsshakers apushmarieb 10th editionthe oxygen consumed during cellular respiration is directly involved indissonance synonymsmallest micro organismbartending drinks recipescytokinesis in plantscliff notes microbiologywhat is a cellular organellethe filtration membrane consists of thekappa alpha psi temple universityin a spinal reflex information flows fromthe axial skeleton exercise 10random orientation of chromosomes during meiosiseasy notes anatomy and physiologyin asexual reproduction offspring are producedsarcomere functionmarketers on demand inc