A population where each element of the population is assigned to one and only one of several classes or categories is a

1.   ?    multinomial population
2.   ?    Poisson population
3.   ?    normal population
4.   ?    none of the above

The sampling distribution for a goodness of fit test is the

1.   ?    a. Poisson distribution
2.   ?    b. t distribution
3.   ?    c. normal distribution
4.   ?    d. chi-square distribution
5.   ?    e. any of the above

A goodness of fit test is always conducted as

1.   ?    a lower tail test
2.   ?    an upper tail test
3.   ?    either a and b
4.   ?    none of the above

An important application of the chi-square distribution is

1.   ?    making inferences about a single population variance
2.   ?    testing for goodness of fit
3.   ?    testing for the independence of two variables
4.   ?    all of the above

The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is

1.   ?    n - 1
2.   ?    k - 1
3.   ?    the number of rows minus 1 times number of columns minus 1
4.   ?    a chi-square distribution is not used

In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be

1.   ?    at least 5
2.   ?    at least 10
3.   ?    no more than 5
4.   ?    the number does not matter

A statistical test conducted to determine whether to reject or not reject a hypothesized probability distribution for a population is known as a

1.   ?    contingency test
2.   ?    probability test
3.   ?    goodness of fit test
4.   ?    none of the above

The degrees of freedom for a contingency table with 21 rows and 7 columns is

1.   ?    20
2.   ?    27
3.   ?    26
4.   ?    147
5.   ?    120

Which one of the following probability distributions is used for determining whether or not a population has a Poisson probability distrubiton?

1.   ?    F-distribution
2.   ?    Normal distribution
3.   ?    Binomial distribution
4.   ?    Chi-square distribution
5.   ?    none of the above

The null hypothesis regarding a contingency table with 6 rows and 4 columns should be rejected (at 95% confidence) if the test statistic is greater than

1.   ?    1.96
2.   ?    1.64
3.   ?    24.996
4.   ?    36.415
5.   ?    none of the above