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Distribution Type

| March 11, 2017

Distribution Type
A student wanted to calculate the probability that there are more than 3 potholes per mile on a highway. What distribution should she use?

a. normal distribution
b. t distribution
c. regression distributon
d. Poisson distribution
e. chi-square distribution

Distribution Type

probability

| March 11, 2017

probability
The scores on a certain test are normally distributed with a mean score of 45 and a standard deviation of 3.
What is the probability that a sample of 90 students will have a mean score of at least 45.3162?

probability

probability

| March 11, 2017

probability
Suppose that in a box of 20 iphones there are 5 with defects…In a draw without replacement, if 3 iphones are picked, what is the probability that all 3 have defective antennas?

probability

When would you use ANOVA at your place of employment, in your education or in politics

| March 11, 2017

When would you use ANOVA at your place of employment, in your education or in politics
When would you use ANOVA at your place of employment, in your education or in politics

When would you use ANOVA at your place of employment, in your education or in politics

 

probability

| March 11, 2017

probability
Suppose that in a box of 20 Iphone devices, there are 5 with defective antennas. In a draw without replacement, if 3 iphone devices are picked, what is the probability that all 3 have defective antennas?

probability

An advantage of a repeated-measure design is that it reduces the contribution of error variability due to

| March 11, 2017

An advantage of a repeated-measure design is that it reduces the contribution of error variability due to
An advantage of a repeated-measure design is that it reduces the contribution of error variability due to
An advantage of a repeated-measure design is that it reduces the contribution of error variability due to

 

chi square

| March 11, 2017

chi square

If you have 30 respondents identifying their political preference (i.e. democrat, republican, independent), what would the expected frequency be for each category?
Choose one answer.
a. 10
b. 30
c. 40
d. 20

chi square

Chi-Square

| March 11, 2017

Chi-Square

Statistics that are not governed by the parameters of the population are referred to as ___________ statistics.
Choose one answer.
a. parametric
b. nonparametric
c. population
d. distribution

Chi-Square

Chi-Square

| March 11, 2017

Chi-Square
Which of the following is the correct formula for the one-sample chi-square?
Choose one answer.
a. Y2 = S (E – O)2 / E
b. ?2 = S (E + O)2 / E
c. Y = S (E + O)2 / E
d. ?2 = S (E – O)2 / E

Chi-Square

Calculating odds

| March 11, 2017

Calculating odds
A modified roulette wheel has 40 slots. One slot is 0, another is 00, and the others are numbered 1 through 38, respectively. You are placing a bet that the outcome is an even number. (In roulette, 0 and 00 are neither odd nor even.)

What are the actual odds against winning?

Calculating odds