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Montecarlo Homeowners Select II Ceiling Fan Model 5HS42
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Montecarlo Homeowners Select II Ceiling Fan Model 5HS42
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Montecarlo Homeowners Select II Ceiling Fan Model MC 5H
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These stats problems are ruining my holiday!?

I have a few stats problems that I could use some help on. Thanks for all the help!

1. A survey of 2450 golfers showed that 281 of them are left-handed. Construct a 98% confidence interval for the proportion of golfers that are left-handed.

2. The mean score of all NBA games during a particular season was less than 106 points per game. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis?

3. A manufacturer claims that the mean lifetime of its fluorescent bulbs is 1000 hours. A homeowner selects 40 bulbs and finds the mean lifetime to be 990 hours with a standard deviation of 80 hours. Test the manufacturer's claim. Use A(alpha)=0.05

4.Test the claim about the population proportion p≥0.700 given N=50 and p=0.612. Use A(alpha)=.10

1. p_hat=281/2450=.114694
q=1 - .114694
Z=2.326
Error=Z(sqrt(pq/n))
Error=.014976
p_hat - error < p_hat < p_hat+error
.0997

2. There is sufficient evidence to reject the null hypothesis and accept alternate hypothesis: the mean score of all NBA games during a particular season was less than 106 points per game since the test statistic falls in the critical region and is greater than the set alpha level. (The result is statistically significant.)

3. We want to use a T-Test even though the sample size is greater than 30, but the population standard deviation is not known.
H0: mu0=mu1
H1: mu0 not equal to mu1
Things we Know:
mu0=1000
x_bar=990
Alpha Level=.05
Sx=80
n=40, df=39
t=-.790569
t=x_bar-mu/(Sx/sqrt(n))
Tc=2.02269 (from table with DF=39)
P-Value=.433977
There is not sufficient evidence to reject the null hypothesis since the P-Value is greater than the
set alpha level of .05 and the test statistic does not fall in the critical region.

4. P=.700, p_hat=.612, alpha=.10, n=50
h0: p≥0.700
h1: p notequal to .700
σ = sqrt[ P * ( 1 - P ) / n ] = = sqrt[ 0.612 * ( 1 - 0.612 ) / 50 ] = .064807
z = (p_hat - P) / σ = (.612 - .70)/.064807 = -1.35787
P-Value: 2(.087253)=.174506

P-Value> Set alpha level of .10, so there is not sufficient evidence to reject the null hypothesis. The result is not statistically significant

Man that was a lot of work. You should split up the questions next time since most people won't respond to 4 questions.

Ultimate Guide to Ceramic & Stone Tile: Select, Install, Maintain
Ultimate Guide to Ceramic & Stone Tile: Select, Install, Maintain
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Everything a do-it-yourselfer needs to know about tiling floors, walls, counters, patios, and more can be found in Ultimate Guide to Ceramic & Stone Tile. Design and planning information helps readers prepare the site and select the right tile–ceramic, stone, vinyl, glass, and more...

Monte Carlo 5HS42BP Homeowner's Select II 42-Inch 5-Blade Ceiling Fan with Natural Maple Blades, Brushed Pewter
Monte Carlo 5HS42BP Homeowner's Select II 42-Inch 5-Blade Ceiling Fan with Natural Maple Blades, Brushed Pewter
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Make any room more comfortable; simple and efficiently.

Ultimate Guide to Ceramic & Stone Tile: Select, Install, Maintain [ULTIMATE GT CERAMIC & STONE TI]
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Monte Carlo 5HS42WH Homeowner's Select II 42-Inch 5-Blade Ceiling Fan with White Blades, White
Monte Carlo 5HS42WH Homeowner's Select II 42-Inch 5-Blade Ceiling Fan with White Blades, White
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Monte Carlo 5HS52BS Homeowner's Select 52-Inch 5-Blade Ceiling Fan with Mahogany Blades, Brushed Steel
Monte Carlo 5HS52BS Homeowner's Select 52-Inch 5-Blade Ceiling Fan with Mahogany Blades, Brushed Steel
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Includes 4.5-in Downrod, Flush Mount Hardware, Limited Lifetime Warranty

Monte Carlo 5HS52BP Homeowner's Select 52-Inch 5-Blade Ceiling Fan and Natural Maple and White Blades, Brushed Pewter
Monte Carlo 5HS52BP Homeowner's Select 52-Inch 5-Blade Ceiling Fan and Natural Maple and White Blades, Brushed Pewter
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A broad spectrum of finishes to add style and comfort to a room

Homeowner's Select Ceiling Fan in Brushed Pewter Finish: Old Chicago with Distressed Pine Blades
Homeowner's Select Ceiling Fan in Brushed Pewter Finish: Old Chicago with Distressed Pine Blades
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5HS42OC Finish: Old Chicago with Distressed Pine Blades Features: -Heavy duty 153 x 12mm torque induction motor.-14 degree blade pitch for optimum air movement.-Precision balanced motor for wobble-free operation...

Lighting Your Home Inside and Out: Design, Select, Install
Lighting Your Home Inside and Out: Design, Select, Install
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The first part of Lighting Your Home Inside and Out will tell readers everything they need to know to design lighting for their home. Rather than live with an odd collection of lamps and fixtures, readers will learn how to create lighting schemes for every room as well as their yard...

Monte Carlo 5HS52RB Homeowner's Select 52-Inch 5-Blade Ceiling Fan with Teak Blades, Roman Bronze
Monte Carlo 5HS52RB Homeowner's Select 52-Inch 5-Blade Ceiling Fan with Teak Blades, Roman Bronze
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Monte Carlo 5HS52WH Homeowner's Select 52-Inch 5-Blade Ceiling Fan with White Blades, White
Monte Carlo 5HS52WH Homeowner's Select 52-Inch 5-Blade Ceiling Fan with White Blades, White
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Includes 4.5-in Downrod, Flush Mount Hardware, (5) 52-in White Blades, Limited Lifetime Warranty





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