Cancel
© 2016 start-seeking.ru
card-image
camera

General Statistics: Ch 6 Quiz

Set Details Share
Helpfulness: 0
created 2 years ago by GreenHero15
23,418 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

Assume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested.

For the case​ below, draw a​ sketch, and find the probability of the reading.​ (The given values are in Celsius​ degrees.)

Between –1.47 and 1.87

card image

The probability of getting a reading between –1.47°C and 1.87°C is 0.8985 .

P(-1.47 < z < 1.87)

= (0.9693 – 0.0708)

2

Assume the readings on thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C.

Find the probability that a randomly selected thermometer reads greater than 0.04 and draw a sketch of the region.

card image

The probability is 0.4840.

P(z > 0.04)

= 1 – P(z < 0.04)

= 1 – 0.5160 = 0.4840

OR

Symmetric to z score of -0.04 (Area = 0.4840)

3

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1.

Find the probability that a given score is less than –0.56 and draw a sketch of the region.

card image

The probability is 0.2877.

P(z < -0.56) = 0.2877

4
card image

Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1.

The indicated z score is 2.09.

5
card image

Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1.

The indicated z score is –0.54.

Symmetric to Area of 0.7054 (z = 0.54)

OR

Area = 1 – 0.7054 = 0.2946

6

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 49.0 and 59.0 minutes.

Find the probability that a given class period runs between 50.5 and 51.5 minutes.

0. 1 00

49.0 = 10.0

Since the uniform distribution is​ rectangular, has a length of 10.0​, and an area of​ 1, the height of the uniform distribution is 0.1.

P(between 50.5 and 51.5​) = ​(shaded region ​length) × (shaded region​ height)

= ​(51.5 – 50.5​) × (0.1​)

= 0.1

7

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1.

Find the probability that a given score is less than 3.69 and draw a sketch of the region.

card image

The probability is 0.9999.

8
card image

Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1.

The area of the shaded region is 0.8508.

P(z > 0.04)

= 1 – P(z < -1.04)

= 1 – 0.1492 = 0.8505

OR

Symmetric to z score of 1.04 (Area = 0.8508)

9

The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 6 minutes. Find the probability that a randomly selected passenger has a waiting time greater than 4.25 minutes.

0.298

P(greater than 45.25​) = ​(length of shaded ​region) ​× (height of shaded​ region)

= ​(6 – 5.25​) × ​(0.167)-round to 2 dec. places

= ​(1.75​ × (0.17)

= 0.2975

10

Assume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested.

For the case​ below, draw a​ sketch, and find the probability of the reading.​ (The given values are in Celsius​ degrees.)

Between –0.50 and 2.00

card image

The probability of getting a reading between 0.50°C and 2.00°C is 0.2857.

P(0.50 < z < 2.00)

= (0.9772 – 0.6915)


Related pages


biochemistry berg tymoczko stryerg protein adenylyl cyclaseexercise 24 special senses visionskeletal muscle reflexstructure and function of glomerulusconservative and liberal ideologiesstructure that suspends the small intestinethe functioning of enhancers is an example ofcentromeres of sister chromatids disjoin and chromatids separatechapter 21 immune systemwhat is the action of the tibialis anteriordefine venous pressurewhat would result if chromosomes did not replicate during interphasefundamentals of nursing hygienesources of pyruvateheredity worksheet answersthe agricultural adjustment administration attempted tojarvis nursing assessmentanatomy and physiology of spinal cordwhich part of the respiratory system carries out gas exchangefrontal squamabones of pectoral girdle and upper limbappendicualr skeletonincreased parasympathetic stimulationwhat tube does a lytes panel go inpharmacology book katzungpicture of anaphaseap biology test questions campbellisotonic meaning biologyhyphae in urinecat dissection pancreasdepolarization phasetouch receptors are calledgland surrounding the urethrasuperficial layer of deep cervical fasciabaroreceptors and chemoreceptors blood pressurecodon translation tablethe sliding filament model of contraction states thatconversion of military time to regular timewhat is a renal corpusclesynonyms for expelglobulins functionmicturition reflex physiologydescribe the accommodation pupillary reflexwhat hormone mimics the sympathetic nervous systemthe greatest single cause of blindness in the world isdiabetic ketoacidosis nursingrespiratory acidosis hyperventilationpics of perpendicular linesall of the following occur during mitosis exceptin glycolysis what starts the process of glucose oxidationfunction of circumflex arterywhat does transformation involve in bacteriawhich of the following is true about epitheliaanimal cell nuclear membranemitochondria electron microscopethe term receivables includes alloutermost meninx covering the brainlenin in russiaascending pathwayshow do centrioles help the cellribs anatomy quizhow does alternative rna splicing affect gene expressionwhy do purines bond with pyrimidines in the dna ladderwhat atoms form covalent bondsadductor brevis origin and insertionreview sheet 12 gross anatomy of the muscular system1895 8th grade final exam answersplant cell rough erfunction of the ossiclesfundamentals nclex questionskrebs cycle in prokaryoteswhat structure secretes bilecarl jung emphasized the importance of in personality functioningcoronary circulation diagramduring ventricular systole what opens the semilunar valveshuman anatomical positions