Writing and Professional Communication WPC 300 – Quiz 3 – Practice
Material
Which of the following is a Type-II error? - correct answer ✔✔ The research hypothesis is
actually true, and the test incorrectly fails to reject the null hypothesis
In order to reject the null hypothesis, the p-value must be less than the - correct answer ✔✔
Alpha
When sample size increases - correct answer ✔✔ confidence interval decreases
Which of the following proposition describes an existing. theory or belief? - correct answer ✔✔
Null hypothesis
what is the confidence interval when the level of significance is 0.06? - correct answer ✔✔
0.940
The WPC Sports Company has noted that the size of individual "customer order" is normally
distributed with a mean of $100 and a standard deviation of $10. if a soccer team of 25 players
was to make the next batch of orders, what would be the standard error of the mean? - correct
answer ✔✔ 2.00
The central limit theorem states that if the population is normally distributed, then the - correct
answer ✔✔ sampling distribution of the mean will also be normal for any sample size
Which of the following is not a continuous random variable? - correct answer ✔✔ the outcomes
of rolling two dice
Material
Which of the following is a Type-II error? - correct answer ✔✔ The research hypothesis is
actually true, and the test incorrectly fails to reject the null hypothesis
In order to reject the null hypothesis, the p-value must be less than the - correct answer ✔✔
Alpha
When sample size increases - correct answer ✔✔ confidence interval decreases
Which of the following proposition describes an existing. theory or belief? - correct answer ✔✔
Null hypothesis
what is the confidence interval when the level of significance is 0.06? - correct answer ✔✔
0.940
The WPC Sports Company has noted that the size of individual "customer order" is normally
distributed with a mean of $100 and a standard deviation of $10. if a soccer team of 25 players
was to make the next batch of orders, what would be the standard error of the mean? - correct
answer ✔✔ 2.00
The central limit theorem states that if the population is normally distributed, then the - correct
answer ✔✔ sampling distribution of the mean will also be normal for any sample size
Which of the following is not a continuous random variable? - correct answer ✔✔ the outcomes
of rolling two dice
