# Bus 173 Ajm

**Topics:**Statistics, Normal distribution, Student's t-test

**Pages:**5 (751 words)

**Published:**April 11, 2013

a) Construct cross tables from the smoothies data file – gender and level of health consciousness Health Consciousness| Male| Female| Subtotal|

Very| 16| 13| 29|

Moderately| 26| 29| 55|

Slightly| 12| 8| 20|

Not Very| 7| 2| 9|

Subtotal| 61| 52| 113|

b) Desire for protein supplement level of health consciousness Health Consciousness| No| Yes| Subtotal|

Very| 12| 17| 29|

Moderately| 19| 36| 55|

Slightly| 9| 11| 20|

Not Very| 2| 7| 9|

Subtotal| 42| 71| 113|

2.68

a) Cross table of method of payment and day of purchase for Florin data file. Payment| M| T| W| Th| F| S| Tot|

Am Ex| 7| 0| 3| 4| 3| 6| 23|

MC| 1| 4| 4| 2| 4| 9| 16|

Visa| 6| 6| 4| 5| 8| 10| 24|

Cash| 3| 1| 0| 0| 3| 9| 16|

Other| 2| 0| 4| 4| 7| 6| 23|

Subtotal| 19| 11| 15| 15| 25| 40| 125|

b) Pie chart of rose color preference

3. 47 describe the charges for snappy lawn inc. for their lawn care services

3.49

Cotton

a. Scatter plot

b. Ŷ=1506+.999 export

marginal value= 0.999

10.62

Results for: BIGFISH.MTW

One-Sample T: Salmon Weight

Test of mu = 40 vs mu > 40

Variable N Mean StDev SE Mean

Salmon Weigh 39 49.73 10.60 1.70

Variable 95.0% Lower Bound T P

Salmon Weigh 46.86 5.73 0.000

at 5% level of significance we have strong enough evidence to reject the Ho that the true mean weight of salmon is no different than 40 in favourof Ha that the true mean weight is significantly greater than 40.

X crit = H0 + t crit (Sx) 40+ 1.686 (1.70) = 42.8662

Population mean for β=.50power=.50: tcrit=0.0;42.8662+0.01.70 =42.8662 Population mean for β= .25 power=.75: tcrit=.681: 42.8662+ .6811.70 = 44.0239 Population mean for β= .10 power=.90: tcrit= 1.28: 42.8662+1.28(1.70) = 45.0422 Population mean for β= .05 (power=.95): tcrit=1.645: 42.8662+1.645(1.70) = 45.6627 or Beta=.50 .25 .10 & .05

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Power CURVE

For Beta=.50 .25 .10 & .05

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40 42 43 44 45 46 POP Mean

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40 42 43 44 45 46 POP Mean

11.50

Results for: ANALYST PREDICTION.MTW

Test for Equal Variances

Level1 ANALYST A

Level2 ANALYST B

ConfLvl 95.0000

Bonferroni confidence intervals for standard deviations

Lower Sigma Upper N Factor Levels

2.81519 4.16314 7.69560 12 ANALYST A

2.74153 4.05421 7.49424 12 ANALYST B

F-Test (normal distribution)

Test Statistic: 1.054

P-Value : 0.931

Levene's Test (any continuous distribution)

Test Statistic: 0.040

P-Value : 0.843

There is insufficient evidence to suggest that the population varience differ between two forecasting analysis.

11.53.

Results for: CORN YIELD.MTW

Paired T-Test and CI: VARIETY A, VARIETY B

Paired T for VARIETY A - VARIETY B

N Mean StDev SE Mean

VARIETY A 10 11.930 2.927 0.925

VARIETY B 10 10.800 2.524 0.798

Difference 10 1.130...

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