Reference no: EM13278157
1. A chi-square test for independence with 8 degrees of freedom results in a test statistic of 18.21. Usingthe chi-square table, the most accurate statement that can be made about the p-value for this test is thatA. 0.025 > p-value > 0.01.
B. 0.05 > p-value > 0.025.
C. p-value
D. 0.10 > p-value > 0.05.
2. In testing a population variance or constructing a confidence interval for the population variance, anessential assumption is thatA. sample size exceeds 30.
B. expected frequencies equal or exceed 5.
C. the population is normally distributed.
D. the population is uniformly distributed.
3. A balanced experiment requires that
A. the number of treatments equals the number of samples.
B. an equal number of persons or test units receives each treatment.
C. at least two treatment groups be used.
D. at least one sample equal size is 30.
4. The object on which the response and factors are observed is called
A. treatments.
B. factor level.
C. factors.
D. experimental unit.
5. An indication of no linear relationship between two variables would be a coefficient of
A. determination equal to -1.
B. determination equal to 1.
C. correlation equal to -1.
D. correlation of 0.
6. In using the ANOVA models, the assumptions made about the data areA. A, B, and C are all assumptions made about the data.
B. the population variances are equal.
C. the population distributions are normal.
D. the samples are independent.
7. The F-statistic in a one-way ANOVA represents the variation
A. between the treatments divided by the variation within the treatments.
End of exam
B. within the treatments divided by the variation between the treatments.
C. within the treatments minus the variation between the treatments.
D. between the treatments plus the variation within the treatments.
8. In a hypothesis test for the population variance, the alternate hypothesis is the population variance doesnot equal 17.0. The significance level to be used is 0.05 and the sample size to be taken is 25. The tablevalue(s) to use from the chi-square distribution is/are
A. 12.401 and 39.364.
B. 40.647.
C. 13.120 and 40.647.
D. 39.364.
9. A regression analysis between sales (in $1000) and advertising (in $) resulted in the following leastsquares line: yˆ = 80,000 + 5x. This implies that an increase of _______ in advertising is expected to resultin an increase of _______ in sales.
A. $1, $5,000
B. $1, $5
C. $1, $80,005
D. $5, $5,000
10. What is the slope of the line that passes through the points (-5, -8) and (3,8)?
A. 2
B. ½
C. -½
D. -2
|
Explain the equilibrium would speed up the equilibrium
: the equilibrium would shift to the right producing more products the equilibrium would shift to the left producing more reagents the equilbrium would not be effected by the created pressure change the equilibrium would speed up the equilibrium wou..
|
|
Obtain the impedance of the circuit
: A circuit has a resistance of 1 ?; a reactance, due to the capacitance, of 27 ?; Find the impedance of the circuit
|
|
Does this sample indicate a smaller average use a= 0.05 and
: mortgage broker is offering home mortgages at a rate of 9.5%, but the broker is fearful that this valueis higher than many others are charging. A sample of 40 mortgages filed in the county courthouse shows anaverage of 9.25% with a standard deviation..
|
|
Explain exothermic formation of 1 mol of sodium chloride
: Give the balanced equation for the reaction- exothermic formation of 1 mol of sodium chloride from its elements
|
|
In testing a population variance or constructing a confidenc
: In a hypothesis test for the population variance, the alternate hypothesis is the population variance doesnot equal 17.0. The significance level to be used is 0.05 and the sample size to be taken is 25. The tablevalue(s) to use from the chi-square di..
|
|
Define the equilibrium would shift to the right
: The equilibrium amounts would stay the same the equilibrium would shift to the right making more reagents the equilibrium would shift to the left making mroe reagents the equilibrium would shift to the right making more products the equilibrium wo..
|
|
How to calculate capacitance from the given values
: How to calculate capacitance from these values, Admittance(s) (2.9981e-6 + 8.3651e-14j), Terminal current(A) (5.9961e-6 + 1.673e-13j), Angular frequency(rad/s) (628.3185) and Electrical potential(v*m^2) (3.48e-12) all in 100Hz frequency
|
|
What is the definition of parallax
: Describe the method used to measure the Sun's shadow and in the drawing on page 18 what are the letters b and d used for?
|
|
Reate two separate sampled sinusoids with sampling frequency
: a.) Create two separate sampled sinusoids with a sampling frequency 7000hz. Two sinusoids frequency at 1000hz, 1900 hz. Add sinusoids together creating x(t). Set time vector between 0 and 10s. b.) With x(t) plot fourier transform using khz as frequ..
|