![]() |
![]() Monte Carlo 5HS52WB Homeowners select Ceiling Fan $29.00 Time Remaining: 14d 6h 58m Buy It Now for only: $29.00 Buy It Now |
![]() Monte Carlo 5HS52WP Homeowners select Ceiling Fan $29.00 Time Remaining: 14d 7h 3m Buy It Now for only: $29.00 Buy It Now |
![]() Montecarlo Homeowners Select II Ceiling Fan Model 5HS42 $68.40 Time Remaining: 28d 5h 40m Buy It Now for only: $68.40 Buy It Now |
![]() Montecarlo Homeowners Select II Ceiling Fan Model 5HS42 $76.00 Time Remaining: 28d 5h 39m Buy It Now for only: $76.00 Buy It Now |
![]() Montecarlo Homeowners Select II Ceiling Fan Model MC 5H $79.80 Time Remaining: 28d 5h 40m Buy It Now for only: $79.80 Buy It Now |
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 List Price: Sale Price: $6.63 You save: $13.32 (67%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionEverything 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 List Price: Sale Price: $67.20 You save: $89.00 (57%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionMake any room more comfortable; simple and efficiently. |
![]() Ultimate Guide to Ceramic & Stone Tile: Select, Install, Maintain [ULTIMATE GT CERAMIC & STONE TI] Sale Price: $9.60 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product |
![]() Monte Carlo 5HS42WH Homeowner's Select II 42-Inch 5-Blade Ceiling Fan with White Blades, White List Price: Sale Price: $68.40 You save: $59.20 (46%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionMake any room more comfortable; simple and efficiently. |
![]() Monte Carlo 5HS52BS Homeowner's Select 52-Inch 5-Blade Ceiling Fan with Mahogany Blades, Brushed Steel List Price: Sale Price: $129.95 You save: $48.25 (27%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionIncludes 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 List Price: Sale Price: $49.99 You save: $132.61 (73%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionA 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 Sale Price: $140.80 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product Description5HS42OC 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 Sale Price: $17.28 Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThe 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 List Price: Sale Price: $134.95 You save: $47.65 (26%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionIncludes 4.5-in Downrod, Flush Mount Hardware, (5) 52-in Teak Blades, Limited Lifetime Warranty |
![]() Monte Carlo 5HS52WH Homeowner's Select 52-Inch 5-Blade Ceiling Fan with White Blades, White List Price: Sale Price: $94.95 You save: $30.45 (24%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionIncludes 4.5-in Downrod, Flush Mount Hardware, (5) 52-in White Blades, Limited Lifetime Warranty |








Eligible for free shipping!

![Ultimate Guide to Ceramic & Stone Tile: Select, Install, Maintain [ULTIMATE GT CERAMIC & STONE TI]](http://www.ceilingfanwithlight.net/media/images/i/519WPVDPJ-L._SL75_.jpg)
















